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Finding the Fourth Proportional to 316,547.49, 436,818.32 and 173,279.86

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Solution

The fourth proportional to 316,547.49, 436,818.32 and 173,279.86 is: 239,116.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,547.49 : 436,818.32 = 173,279.86 : x
  2. Step 2: Convert to fraction form
    316,547.49/436,818.32 = 173,279.86/x
  3. Step 3: Cross multiply
    316,547.49x = 436,818.32 × 173,279.86
  4. Step 4: Simplify right side
    316,547.49x = 75,691,816,026.39
  5. Step 5: Solve for x
    x = 75,691,816,026.39/316,547.49
  6. Step 6: Final answer
    x = 239,116.78

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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.