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Finding the Fourth Proportional to 310,337.72, 428,266.56 and 176,201.72

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Solution

The fourth proportional to 310,337.72, 428,266.56 and 176,201.72 is: 243,158.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,337.72 : 428,266.56 = 176,201.72 : x
  2. Step 2: Convert to fraction form
    310,337.72/428,266.56 = 176,201.72/x
  3. Step 3: Cross multiply
    310,337.72x = 428,266.56 × 176,201.72
  4. Step 4: Simplify right side
    310,337.72x = 75,461,304,490.48
  5. Step 5: Solve for x
    x = 75,461,304,490.48/310,337.72
  6. Step 6: Final answer
    x = 243,158.66

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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.