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Finding the Fourth Proportional to 485,650.04, 728,059.61 and 186,345.42

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Solution

The fourth proportional to 485,650.04, 728,059.61 and 186,345.42 is: 279,358.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,650.04 : 728,059.61 = 186,345.42 : x
  2. Step 2: Convert to fraction form
    485,650.04/728,059.61 = 186,345.42/x
  3. Step 3: Cross multiply
    485,650.04x = 728,059.61 × 186,345.42
  4. Step 4: Simplify right side
    485,650.04x = 135,670,572,878.76
  5. Step 5: Solve for x
    x = 135,670,572,878.76/485,650.04
  6. Step 6: Final answer
    x = 279,358.72

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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.