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Finding the Fourth Proportional to 442,878.40, 664,252.80 and 127,302.40

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Solution

The fourth proportional to 442,878.40, 664,252.80 and 127,302.40 is: 190,934.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,878.40 : 664,252.80 = 127,302.40 : x
  2. Step 2: Convert to fraction form
    442,878.40/664,252.80 = 127,302.40/x
  3. Step 3: Cross multiply
    442,878.40x = 664,252.80 × 127,302.40
  4. Step 4: Simplify right side
    442,878.40x = 84,560,975,646.72
  5. Step 5: Solve for x
    x = 84,560,975,646.72/442,878.40
  6. Step 6: Final answer
    x = 190,934.97

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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.