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Finding the Fourth Proportional to 384,612.10, 576,918.15 and 104,128.90

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Solution

The fourth proportional to 384,612.10, 576,918.15 and 104,128.90 is: 156,193.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,612.10 : 576,918.15 = 104,128.90 : x
  2. Step 2: Convert to fraction form
    384,612.10/576,918.15 = 104,128.90/x
  3. Step 3: Cross multiply
    384,612.10x = 576,918.15 × 104,128.90
  4. Step 4: Simplify right side
    384,612.10x = 60,073,852,349.54
  5. Step 5: Solve for x
    x = 60,073,852,349.54/384,612.10
  6. Step 6: Final answer
    x = 156,193.35

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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.