Home / 438,565.17-657,871.08-139,069.38

Finding the Fourth Proportional to 438,565.17, 657,871.08 and 139,069.38

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Solution

The fourth proportional to 438,565.17, 657,871.08 and 139,069.38 is: 208,611.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,565.17 : 657,871.08 = 139,069.38 : x
  2. Step 2: Convert to fraction form
    438,565.17/657,871.08 = 139,069.38/x
  3. Step 3: Cross multiply
    438,565.17x = 657,871.08 × 139,069.38
  4. Step 4: Simplify right side
    438,565.17x = 91,489,723,215.53
  5. Step 5: Solve for x
    x = 91,489,723,215.53/438,565.17
  6. Step 6: Final answer
    x = 208,611.47

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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.