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Finding the Fourth Proportional to 310,543.08, 428,551.14 and 176,411.88

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Solution

The fourth proportional to 310,543.08, 428,551.14 and 176,411.88 is: 243,449.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,543.08 : 428,551.14 = 176,411.88 : x
  2. Step 2: Convert to fraction form
    310,543.08/428,551.14 = 176,411.88/x
  3. Step 3: Cross multiply
    310,543.08x = 428,551.14 × 176,411.88
  4. Step 4: Simplify right side
    310,543.08x = 75,601,512,283.54
  5. Step 5: Solve for x
    x = 75,601,512,283.54/310,543.08
  6. Step 6: Final answer
    x = 243,449.35

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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.