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Finding the Fourth Proportional to 438,187.62, 657,281.44 and 105,763.62

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Solution

The fourth proportional to 438,187.62, 657,281.44 and 105,763.62 is: 158,645.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,187.62 : 657,281.44 = 105,763.62 : x
  2. Step 2: Convert to fraction form
    438,187.62/657,281.44 = 105,763.62/x
  3. Step 3: Cross multiply
    438,187.62x = 657,281.44 × 105,763.62
  4. Step 4: Simplify right side
    438,187.62x = 69,516,466,455.30
  5. Step 5: Solve for x
    x = 69,516,466,455.30/438,187.62
  6. Step 6: Final answer
    x = 158,645.44

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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.