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Finding the Fourth Proportional to 485,385.48, 669,673.62 and 270,484.92

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Solution

The fourth proportional to 485,385.48, 669,673.62 and 270,484.92 is: 373,180.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,385.48 : 669,673.62 = 270,484.92 : x
  2. Step 2: Convert to fraction form
    485,385.48/669,673.62 = 270,484.92/x
  3. Step 3: Cross multiply
    485,385.48x = 669,673.62 × 270,484.92
  4. Step 4: Simplify right side
    485,385.48x = 181,136,615,531.81
  5. Step 5: Solve for x
    x = 181,136,615,531.81/485,385.48
  6. Step 6: Final answer
    x = 373,180.95

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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.