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Finding the Fourth Proportional to 482,130.83, 665,346.61 and 278,224.07

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Solution

The fourth proportional to 482,130.83, 665,346.61 and 278,224.07 is: 383,952.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    482,130.83 : 665,346.61 = 278,224.07 : x
  2. Step 2: Convert to fraction form
    482,130.83/665,346.61 = 278,224.07/x
  3. Step 3: Cross multiply
    482,130.83x = 665,346.61 × 278,224.07
  4. Step 4: Simplify right side
    482,130.83x = 185,115,437,250.94
  5. Step 5: Solve for x
    x = 185,115,437,250.94/482,130.83
  6. Step 6: Final answer
    x = 383,952.70

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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.