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Finding the Fourth Proportional to 415,348.33, 623,013.55 and 115,820.93

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Solution

The fourth proportional to 415,348.33, 623,013.55 and 115,820.93 is: 173,728.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,348.33 : 623,013.55 = 115,820.93 : x
  2. Step 2: Convert to fraction form
    415,348.33/623,013.55 = 115,820.93/x
  3. Step 3: Cross multiply
    415,348.33x = 623,013.55 × 115,820.93
  4. Step 4: Simplify right side
    415,348.33x = 72,158,008,184.50
  5. Step 5: Solve for x
    x = 72,158,008,184.50/415,348.33
  6. Step 6: Final answer
    x = 173,728.90

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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.