Home / 287,607,465.90-431,411,198.85-239,777,775.90

Finding the Fourth Proportional to 287,607,465.90, 431,411,198.85 and 239,777,775.90

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Solution

The fourth proportional to 287,607,465.90, 431,411,198.85 and 239,777,775.90 is: 359,666,663.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,607,465.90 : 431,411,198.85 = 239,777,775.90 : x
  2. Step 2: Convert to fraction form
    287,607,465.90/431,411,198.85 = 239,777,775.90/x
  3. Step 3: Cross multiply
    287,607,465.90x = 431,411,198.85 × 239,777,775.90
  4. Step 4: Simplify right side
    287,607,465.90x = 103,442,817,758,605,648
  5. Step 5: Solve for x
    x = 103,442,817,758,605,648/287,607,465.90
  6. Step 6: Final answer
    x = 359,666,663.85

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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.