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Finding the Fourth Proportional to 384,752.80, 577,129.20 and 171,520.30

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Solution

The fourth proportional to 384,752.80, 577,129.20 and 171,520.30 is: 257,280.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,752.80 : 577,129.20 = 171,520.30 : x
  2. Step 2: Convert to fraction form
    384,752.80/577,129.20 = 171,520.30/x
  3. Step 3: Cross multiply
    384,752.80x = 577,129.20 × 171,520.30
  4. Step 4: Simplify right side
    384,752.80x = 98,989,373,522.76
  5. Step 5: Solve for x
    x = 98,989,373,522.76/384,752.80
  6. Step 6: Final answer
    x = 257,280.45

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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.