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Finding the Fourth Proportional to 579,374.10, 869,061.15 and 158,649.30

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Solution

The fourth proportional to 579,374.10, 869,061.15 and 158,649.30 is: 237,973.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,374.10 : 869,061.15 = 158,649.30 : x
  2. Step 2: Convert to fraction form
    579,374.10/869,061.15 = 158,649.30/x
  3. Step 3: Cross multiply
    579,374.10x = 869,061.15 × 158,649.30
  4. Step 4: Simplify right side
    579,374.10x = 137,875,943,104.70
  5. Step 5: Solve for x
    x = 137,875,943,104.70/579,374.10
  6. Step 6: Final answer
    x = 237,973.95

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Double scale
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Similar ratio
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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.