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Finding the Fourth Proportional to 566,309.31, 781,330.86 and 321,253.74

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Solution

The fourth proportional to 566,309.31, 781,330.86 and 321,253.74 is: 443,230.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    566,309.31 : 781,330.86 = 321,253.74 : x
  2. Step 2: Convert to fraction form
    566,309.31/781,330.86 = 321,253.74/x
  3. Step 3: Cross multiply
    566,309.31x = 781,330.86 × 321,253.74
  4. Step 4: Simplify right side
    566,309.31x = 251,005,460,952.42
  5. Step 5: Solve for x
    x = 251,005,460,952.42/566,309.31
  6. Step 6: Final answer
    x = 443,230.33

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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.