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Finding the Fourth Proportional to 310,535.77, 465,777.68 and 85,898.97

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Solution

The fourth proportional to 310,535.77, 465,777.68 and 85,898.97 is: 128,841.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,535.77 : 465,777.68 = 85,898.97 : x
  2. Step 2: Convert to fraction form
    310,535.77/465,777.68 = 85,898.97/x
  3. Step 3: Cross multiply
    310,535.77x = 465,777.68 × 85,898.97
  4. Step 4: Simplify right side
    310,535.77x = 40,009,822,960.99
  5. Step 5: Solve for x
    x = 40,009,822,960.99/310,535.77
  6. Step 6: Final answer
    x = 128,841.27

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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.