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Finding the Fourth Proportional to 485,969.10, 728,953.65 and 170,312.10

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Solution

The fourth proportional to 485,969.10, 728,953.65 and 170,312.10 is: 255,468.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,969.10 : 728,953.65 = 170,312.10 : x
  2. Step 2: Convert to fraction form
    485,969.10/728,953.65 = 170,312.10/x
  3. Step 3: Cross multiply
    485,969.10x = 728,953.65 × 170,312.10
  4. Step 4: Simplify right side
    485,969.10x = 124,149,626,934.17
  5. Step 5: Solve for x
    x = 124,149,626,934.17/485,969.10
  6. Step 6: Final answer
    x = 255,468.15

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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.