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Finding the Fourth Proportional to 428,880.68, 591,855.92 and 237,894.06

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Solution

The fourth proportional to 428,880.68, 591,855.92 and 237,894.06 is: 328,294.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,880.68 : 591,855.92 = 237,894.06 : x
  2. Step 2: Convert to fraction form
    428,880.68/591,855.92 = 237,894.06/x
  3. Step 3: Cross multiply
    428,880.68x = 591,855.92 × 237,894.06
  4. Step 4: Simplify right side
    428,880.68x = 140,799,007,743.84
  5. Step 5: Solve for x
    x = 140,799,007,743.84/428,880.68
  6. Step 6: Final answer
    x = 328,294.13

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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.