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Finding the Fourth Proportional to 415,549, 623,427.18 and 120,061

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Solution

The fourth proportional to 415,549, 623,427.18 and 120,061 is: 180,121.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,549 : 623,427.18 = 120,061 : x
  2. Step 2: Convert to fraction form
    415,549/623,427.18 = 120,061/x
  3. Step 3: Cross multiply
    415,549x = 623,427.18 × 120,061
  4. Step 4: Simplify right side
    415,549x = 74,849,290,657.98
  5. Step 5: Solve for x
    x = 74,849,290,657.98/415,549
  6. Step 6: Final answer
    x = 180,121.46

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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.