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Finding the Fourth Proportional to 438,188.62, 657,282.94 and 105,764.62

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Solution

The fourth proportional to 438,188.62, 657,282.94 and 105,764.62 is: 158,646.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,188.62 : 657,282.94 = 105,764.62 : x
  2. Step 2: Convert to fraction form
    438,188.62/657,282.94 = 105,764.62/x
  3. Step 3: Cross multiply
    438,188.62x = 657,282.94 × 105,764.62
  4. Step 4: Simplify right side
    438,188.62x = 69,517,280,381.58
  5. Step 5: Solve for x
    x = 69,517,280,381.58/438,188.62
  6. Step 6: Final answer
    x = 158,646.93

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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.