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Finding the Fourth Proportional to 415,908.45, 623,862.52 and 163,307.79

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Solution

The fourth proportional to 415,908.45, 623,862.52 and 163,307.79 is: 244,961.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,908.45 : 623,862.52 = 163,307.79 : x
  2. Step 2: Convert to fraction form
    415,908.45/623,862.52 = 163,307.79/x
  3. Step 3: Cross multiply
    415,908.45x = 623,862.52 × 163,307.79
  4. Step 4: Simplify right side
    415,908.45x = 101,881,608,996.76
  5. Step 5: Solve for x
    x = 101,881,608,996.76/415,908.45
  6. Step 6: Final answer
    x = 244,961.62

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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.