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Finding the Fourth Proportional to 521,348.94, 719,294.22 and 291,872.52

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Solution

The fourth proportional to 521,348.94, 719,294.22 and 291,872.52 is: 402,690.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,348.94 : 719,294.22 = 291,872.52 : x
  2. Step 2: Convert to fraction form
    521,348.94/719,294.22 = 291,872.52/x
  3. Step 3: Cross multiply
    521,348.94x = 719,294.22 × 291,872.52
  4. Step 4: Simplify right side
    521,348.94x = 209,942,216,612.83
  5. Step 5: Solve for x
    x = 209,942,216,612.83/521,348.94
  6. Step 6: Final answer
    x = 402,690.41

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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.