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Finding the Fourth Proportional to 304,915.68, 457,290.90 and 127,385.55

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Solution

The fourth proportional to 304,915.68, 457,290.90 and 127,385.55 is: 191,043.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    304,915.68 : 457,290.90 = 127,385.55 : x
  2. Step 2: Convert to fraction form
    304,915.68/457,290.90 = 127,385.55/x
  3. Step 3: Cross multiply
    304,915.68x = 457,290.90 × 127,385.55
  4. Step 4: Simplify right side
    304,915.68x = 58,252,252,806.50
  5. Step 5: Solve for x
    x = 58,252,252,806.50/304,915.68
  6. Step 6: Final answer
    x = 191,043.81

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1.5x scale

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.