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Finding the Fourth Proportional to 390,080.10, 584,796.15 and 165,612.90

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Solution

The fourth proportional to 390,080.10, 584,796.15 and 165,612.90 is: 248,281.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,080.10 : 584,796.15 = 165,612.90 : x
  2. Step 2: Convert to fraction form
    390,080.10/584,796.15 = 165,612.90/x
  3. Step 3: Cross multiply
    390,080.10x = 584,796.15 × 165,612.90
  4. Step 4: Simplify right side
    390,080.10x = 96,849,786,310.34
  5. Step 5: Solve for x
    x = 96,849,786,310.34/390,080.10
  6. Step 6: Final answer
    x = 248,281.79

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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.