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Finding the Fourth Proportional to 261,807.20, 392,714.75 and 99,710.22

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Solution

The fourth proportional to 261,807.20, 392,714.75 and 99,710.22 is: 149,566.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,807.20 : 392,714.75 = 99,710.22 : x
  2. Step 2: Convert to fraction form
    261,807.20/392,714.75 = 99,710.22/x
  3. Step 3: Cross multiply
    261,807.20x = 392,714.75 × 99,710.22
  4. Step 4: Simplify right side
    261,807.20x = 39,157,673,621.19
  5. Step 5: Solve for x
    x = 39,157,673,621.19/261,807.20
  6. Step 6: Final answer
    x = 149,566.83

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.