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Finding the Fourth Proportional to 335,087.70, 502,631.55 and 85,769.70

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Solution

The fourth proportional to 335,087.70, 502,631.55 and 85,769.70 is: 128,654.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    335,087.70 : 502,631.55 = 85,769.70 : x
  2. Step 2: Convert to fraction form
    335,087.70/502,631.55 = 85,769.70/x
  3. Step 3: Cross multiply
    335,087.70x = 502,631.55 × 85,769.70
  4. Step 4: Simplify right side
    335,087.70x = 43,110,557,254.04
  5. Step 5: Solve for x
    x = 43,110,557,254.04/335,087.70
  6. Step 6: Final answer
    x = 128,654.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.