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Finding the Fourth Proportional to 501,248.73, 691,659.30 and 286,402.71

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Solution

The fourth proportional to 501,248.73, 691,659.30 and 286,402.71 is: 395,199.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    501,248.73 : 691,659.30 = 286,402.71 : x
  2. Step 2: Convert to fraction form
    501,248.73/691,659.30 = 286,402.71/x
  3. Step 3: Cross multiply
    501,248.73x = 691,659.30 × 286,402.71
  4. Step 4: Simplify right side
    501,248.73x = 198,093,097,916.70
  5. Step 5: Solve for x
    x = 198,093,097,916.70/501,248.73
  6. Step 6: Final answer
    x = 395,199.20

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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.