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Finding the Fourth Proportional to 485,411.85, 669,871.46 and 270,565.54

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Solution

The fourth proportional to 485,411.85, 669,871.46 and 270,565.54 is: 373,382.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,411.85 : 669,871.46 = 270,565.54 : x
  2. Step 2: Convert to fraction form
    485,411.85/669,871.46 = 270,565.54/x
  3. Step 3: Cross multiply
    485,411.85x = 669,871.46 × 270,565.54
  4. Step 4: Simplify right side
    485,411.85x = 181,244,132,307.22
  5. Step 5: Solve for x
    x = 181,244,132,307.22/485,411.85
  6. Step 6: Final answer
    x = 373,382.17

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.