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Finding the Fourth Proportional to 282,637.80, 423,956.70 and 72,264.60

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Solution

The fourth proportional to 282,637.80, 423,956.70 and 72,264.60 is: 108,396.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,637.80 : 423,956.70 = 72,264.60 : x
  2. Step 2: Convert to fraction form
    282,637.80/423,956.70 = 72,264.60/x
  3. Step 3: Cross multiply
    282,637.80x = 423,956.70 × 72,264.60
  4. Step 4: Simplify right side
    282,637.80x = 30,637,061,342.82
  5. Step 5: Solve for x
    x = 30,637,061,342.82/282,637.80
  6. Step 6: Final answer
    x = 108,396.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.