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Finding the Fourth Proportional to 415,425.47, 623,243.24 and 115,905.89

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Solution

The fourth proportional to 415,425.47, 623,243.24 and 115,905.89 is: 173,888.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,425.47 : 623,243.24 = 115,905.89 : x
  2. Step 2: Convert to fraction form
    415,425.47/623,243.24 = 115,905.89/x
  3. Step 3: Cross multiply
    415,425.47x = 623,243.24 × 115,905.89
  4. Step 4: Simplify right side
    415,425.47x = 72,237,558,722.94
  5. Step 5: Solve for x
    x = 72,237,558,722.94/415,425.47
  6. Step 6: Final answer
    x = 173,888.13

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1.5x scale

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.