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Finding the Fourth Proportional to 521,273.64, 719,443.65 and 357,795.80

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Solution

The fourth proportional to 521,273.64, 719,443.65 and 357,795.80 is: 493,817.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,273.64 : 719,443.65 = 357,795.80 : x
  2. Step 2: Convert to fraction form
    521,273.64/719,443.65 = 357,795.80/x
  3. Step 3: Cross multiply
    521,273.64x = 719,443.65 × 357,795.80
  4. Step 4: Simplify right side
    521,273.64x = 257,413,916,306.67
  5. Step 5: Solve for x
    x = 257,413,916,306.67/521,273.64
  6. Step 6: Final answer
    x = 493,817.25

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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.