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Finding the Fourth Proportional to 415,551, 623,430.18 and 120,063

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Solution

The fourth proportional to 415,551, 623,430.18 and 120,063 is: 180,124.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,551 : 623,430.18 = 120,063 : x
  2. Step 2: Convert to fraction form
    415,551/623,430.18 = 120,063/x
  3. Step 3: Cross multiply
    415,551x = 623,430.18 × 120,063
  4. Step 4: Simplify right side
    415,551x = 74,850,897,701.34
  5. Step 5: Solve for x
    x = 74,850,897,701.34/415,551
  6. Step 6: Final answer
    x = 180,124.46

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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.