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Finding the Fourth Proportional to 371,647.59, 557,468.75 and 105,407.88

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Solution

The fourth proportional to 371,647.59, 557,468.75 and 105,407.88 is: 158,111.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,647.59 : 557,468.75 = 105,407.88 : x
  2. Step 2: Convert to fraction form
    371,647.59/557,468.75 = 105,407.88/x
  3. Step 3: Cross multiply
    371,647.59x = 557,468.75 × 105,407.88
  4. Step 4: Simplify right side
    371,647.59x = 58,761,598,576.71
  5. Step 5: Solve for x
    x = 58,761,598,576.71/371,647.59
  6. Step 6: Final answer
    x = 158,111.07

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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.