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Finding the Fourth Proportional to 516,311.60, 712,501.02 and 286,871.00

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Solution

The fourth proportional to 516,311.60, 712,501.02 and 286,871.00 is: 395,876.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    516,311.60 : 712,501.02 = 286,871.00 : x
  2. Step 2: Convert to fraction form
    516,311.60/712,501.02 = 286,871.00/x
  3. Step 3: Cross multiply
    516,311.60x = 712,501.02 × 286,871.00
  4. Step 4: Simplify right side
    516,311.60x = 204,395,876,545.92
  5. Step 5: Solve for x
    x = 204,395,876,545.92/516,311.60
  6. Step 6: Final answer
    x = 395,876.98

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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.