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Finding the Fourth Proportional to 447,071.79, 616,963.20 and 243,124.65

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Solution

The fourth proportional to 447,071.79, 616,963.20 and 243,124.65 is: 335,514.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,071.79 : 616,963.20 = 243,124.65 : x
  2. Step 2: Convert to fraction form
    447,071.79/616,963.20 = 243,124.65/x
  3. Step 3: Cross multiply
    447,071.79x = 616,963.20 × 243,124.65
  4. Step 4: Simplify right side
    447,071.79x = 149,998,962,062.88
  5. Step 5: Solve for x
    x = 149,998,962,062.88/447,071.79
  6. Step 6: Final answer
    x = 335,514.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.