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Finding the Fourth Proportional to 316,909.92, 437,328.72 and 173,666.88

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Solution

The fourth proportional to 316,909.92, 437,328.72 and 173,666.88 is: 239,656.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,909.92 : 437,328.72 = 173,666.88 : x
  2. Step 2: Convert to fraction form
    316,909.92/437,328.72 = 173,666.88/x
  3. Step 3: Cross multiply
    316,909.92x = 437,328.72 × 173,666.88
  4. Step 4: Simplify right side
    316,909.92x = 75,949,514,336.79
  5. Step 5: Solve for x
    x = 75,949,514,336.79/316,909.92
  6. Step 6: Final answer
    x = 239,656.48

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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.