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Finding the Fourth Proportional to 482,700.93, 666,159.12 and 278,760.42

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Solution

The fourth proportional to 482,700.93, 666,159.12 and 278,760.42 is: 384,707.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    482,700.93 : 666,159.12 = 278,760.42 : x
  2. Step 2: Convert to fraction form
    482,700.93/666,159.12 = 278,760.42/x
  3. Step 3: Cross multiply
    482,700.93x = 666,159.12 × 278,760.42
  4. Step 4: Simplify right side
    482,700.93x = 185,698,796,078.03
  5. Step 5: Solve for x
    x = 185,698,796,078.03/482,700.93
  6. Step 6: Final answer
    x = 384,707.77

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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.