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Finding the Fourth Proportional to 310,753.61, 428,878.02 and 174,793.29

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Solution

The fourth proportional to 310,753.61, 428,878.02 and 174,793.29 is: 241,236.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,753.61 : 428,878.02 = 174,793.29 : x
  2. Step 2: Convert to fraction form
    310,753.61/428,878.02 = 174,793.29/x
  3. Step 3: Cross multiply
    310,753.61x = 428,878.02 × 174,793.29
  4. Step 4: Simplify right side
    310,753.61x = 74,964,997,980.10
  5. Step 5: Solve for x
    x = 74,964,997,980.10/310,753.61
  6. Step 6: Final answer
    x = 241,236.13

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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.