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Finding the Fourth Proportional to 480,978.97, 721,566.86 and 165,394.89

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Solution

The fourth proportional to 480,978.97, 721,566.86 and 165,394.89 is: 248,126.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    480,978.97 : 721,566.86 = 165,394.89 : x
  2. Step 2: Convert to fraction form
    480,978.97/721,566.86 = 165,394.89/x
  3. Step 3: Cross multiply
    480,978.97x = 721,566.86 × 165,394.89
  4. Step 4: Simplify right side
    480,978.97x = 119,343,470,610.37
  5. Step 5: Solve for x
    x = 119,343,470,610.37/480,978.97
  6. Step 6: Final answer
    x = 248,126.17

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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.