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Finding the Fourth Proportional to 384,127.30, 576,190.95 and 103,672.90

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Solution

The fourth proportional to 384,127.30, 576,190.95 and 103,672.90 is: 155,509.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,127.30 : 576,190.95 = 103,672.90 : x
  2. Step 2: Convert to fraction form
    384,127.30/576,190.95 = 103,672.90/x
  3. Step 3: Cross multiply
    384,127.30x = 576,190.95 × 103,672.90
  4. Step 4: Simplify right side
    384,127.30x = 59,735,386,740.26
  5. Step 5: Solve for x
    x = 59,735,386,740.26/384,127.30
  6. Step 6: Final answer
    x = 155,509.35

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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.