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Finding the Fourth Proportional to 384,076.80, 576,115.20 and 134,726.40

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Solution

The fourth proportional to 384,076.80, 576,115.20 and 134,726.40 is: 202,089.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,076.80 : 576,115.20 = 134,726.40 : x
  2. Step 2: Convert to fraction form
    384,076.80/576,115.20 = 134,726.40/x
  3. Step 3: Cross multiply
    384,076.80x = 576,115.20 × 134,726.40
  4. Step 4: Simplify right side
    384,076.80x = 77,617,926,881.28
  5. Step 5: Solve for x
    x = 77,617,926,881.28/384,076.80
  6. Step 6: Final answer
    x = 202,089.60

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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.