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Finding the Fourth Proportional to 482,126.96, 665,341.22 and 278,220.20

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Solution

The fourth proportional to 482,126.96, 665,341.22 and 278,220.20 is: 383,947.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    482,126.96 : 665,341.22 = 278,220.20 : x
  2. Step 2: Convert to fraction form
    482,126.96/665,341.22 = 278,220.20/x
  3. Step 3: Cross multiply
    482,126.96x = 665,341.22 × 278,220.20
  4. Step 4: Simplify right side
    482,126.96x = 185,111,367,296.64
  5. Step 5: Solve for x
    x = 185,111,367,296.64/482,126.96
  6. Step 6: Final answer
    x = 383,947.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.