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Finding the Fourth Proportional to 310,209.68, 428,089.56 and 174,243.92

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Solution

The fourth proportional to 310,209.68, 428,089.56 and 174,243.92 is: 240,456.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,209.68 : 428,089.56 = 174,243.92 : x
  2. Step 2: Convert to fraction form
    310,209.68/428,089.56 = 174,243.92/x
  3. Step 3: Cross multiply
    310,209.68x = 428,089.56 × 174,243.92
  4. Step 4: Simplify right side
    310,209.68x = 74,592,003,045.48
  5. Step 5: Solve for x
    x = 74,592,003,045.48/310,209.68
  6. Step 6: Final answer
    x = 240,456.72

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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.