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Finding the Fourth Proportional to 521,230.91, 719,366.49 and 291,875.54

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Solution

The fourth proportional to 521,230.91, 719,366.49 and 291,875.54 is: 402,826.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,230.91 : 719,366.49 = 291,875.54 : x
  2. Step 2: Convert to fraction form
    521,230.91/719,366.49 = 291,875.54/x
  3. Step 3: Cross multiply
    521,230.91x = 719,366.49 × 291,875.54
  4. Step 4: Simplify right side
    521,230.91x = 209,965,479,129.82
  5. Step 5: Solve for x
    x = 209,965,479,129.82/521,230.91
  6. Step 6: Final answer
    x = 402,826.23

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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.