Home / 212,990,669.10-319,486,003.65-190,032,417.90

Finding the Fourth Proportional to 212,990,669.10, 319,486,003.65 and 190,032,417.90

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Solution

The fourth proportional to 212,990,669.10, 319,486,003.65 and 190,032,417.90 is: 285,048,626.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,990,669.10 : 319,486,003.65 = 190,032,417.90 : x
  2. Step 2: Convert to fraction form
    212,990,669.10/319,486,003.65 = 190,032,417.90/x
  3. Step 3: Cross multiply
    212,990,669.10x = 319,486,003.65 × 190,032,417.90
  4. Step 4: Simplify right side
    212,990,669.10x = 60,712,697,758,817,720
  5. Step 5: Solve for x
    x = 60,712,697,758,817,720/212,990,669.10
  6. Step 6: Final answer
    x = 285,048,626.85

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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.