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Finding the Fourth Proportional to 485,837.52, 728,756.30 and 260,888.52

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Solution

The fourth proportional to 485,837.52, 728,756.30 and 260,888.52 is: 391,332.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,837.52 : 728,756.30 = 260,888.52 : x
  2. Step 2: Convert to fraction form
    485,837.52/728,756.30 = 260,888.52/x
  3. Step 3: Cross multiply
    485,837.52x = 728,756.30 × 260,888.52
  4. Step 4: Simplify right side
    485,837.52x = 190,124,151,243.23
  5. Step 5: Solve for x
    x = 190,124,151,243.23/485,837.52
  6. Step 6: Final answer
    x = 391,332.79

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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.