Home / 315,008,016.80-472,512,025.20-238,480,512.80

Finding the Fourth Proportional to 315,008,016.80, 472,512,025.20 and 238,480,512.80

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Solution

The fourth proportional to 315,008,016.80, 472,512,025.20 and 238,480,512.80 is: 357,720,769.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,008,016.80 : 472,512,025.20 = 238,480,512.80 : x
  2. Step 2: Convert to fraction form
    315,008,016.80/472,512,025.20 = 238,480,512.80/x
  3. Step 3: Cross multiply
    315,008,016.80x = 472,512,025.20 × 238,480,512.80
  4. Step 4: Simplify right side
    315,008,016.80x = 112,684,910,073,862,528
  5. Step 5: Solve for x
    x = 112,684,910,073,862,528/315,008,016.80
  6. Step 6: Final answer
    x = 357,720,769.20

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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.