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Finding the Fourth Proportional to 384,122.80, 576,184.20 and 103,668.40

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Solution

The fourth proportional to 384,122.80, 576,184.20 and 103,668.40 is: 155,502.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,122.80 : 576,184.20 = 103,668.40 : x
  2. Step 2: Convert to fraction form
    384,122.80/576,184.20 = 103,668.40/x
  3. Step 3: Cross multiply
    384,122.80x = 576,184.20 × 103,668.40
  4. Step 4: Simplify right side
    384,122.80x = 59,732,094,119.28
  5. Step 5: Solve for x
    x = 59,732,094,119.28/384,122.80
  6. Step 6: Final answer
    x = 155,502.60

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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.