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Finding the Fourth Proportional to 439,901.20, 660,024.60 and 173,616.40

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Solution

The fourth proportional to 439,901.20, 660,024.60 and 173,616.40 is: 260,492.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,901.20 : 660,024.60 = 173,616.40 : x
  2. Step 2: Convert to fraction form
    439,901.20/660,024.60 = 173,616.40/x
  3. Step 3: Cross multiply
    439,901.20x = 660,024.60 × 173,616.40
  4. Step 4: Simplify right side
    439,901.20x = 114,591,094,963.44
  5. Step 5: Solve for x
    x = 114,591,094,963.44/439,901.20
  6. Step 6: Final answer
    x = 260,492.80

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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.