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Finding the Fourth Proportional to 438,417.30, 657,297.90 and 238,962.90

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Solution

The fourth proportional to 438,417.30, 657,297.90 and 238,962.90 is: 358,265.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,417.30 : 657,297.90 = 238,962.90 : x
  2. Step 2: Convert to fraction form
    438,417.30/657,297.90 = 238,962.90/x
  3. Step 3: Cross multiply
    438,417.30x = 657,297.90 × 238,962.90
  4. Step 4: Simplify right side
    438,417.30x = 157,069,812,347.91
  5. Step 5: Solve for x
    x = 157,069,812,347.91/438,417.30
  6. Step 6: Final answer
    x = 358,265.54

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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.