Home / 315,007,998.80-472,511,998.20-238,480,494.80

Finding the Fourth Proportional to 315,007,998.80, 472,511,998.20 and 238,480,494.80

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Solution

The fourth proportional to 315,007,998.80, 472,511,998.20 and 238,480,494.80 is: 357,720,742.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,007,998.80 : 472,511,998.20 = 238,480,494.80 : x
  2. Step 2: Convert to fraction form
    315,007,998.80/472,511,998.20 = 238,480,494.80/x
  3. Step 3: Cross multiply
    315,007,998.80x = 472,511,998.20 × 238,480,494.80
  4. Step 4: Simplify right side
    315,007,998.80x = 112,684,895,129,672,720
  5. Step 5: Solve for x
    x = 112,684,895,129,672,720/315,007,998.80
  6. Step 6: Final answer
    x = 357,720,742.20

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.