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Finding the Fourth Proportional to 486,915.04, 730,362.80 and 220,625.92

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Solution

The fourth proportional to 486,915.04, 730,362.80 and 220,625.92 is: 330,934.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,915.04 : 730,362.80 = 220,625.92 : x
  2. Step 2: Convert to fraction form
    486,915.04/730,362.80 = 220,625.92/x
  3. Step 3: Cross multiply
    486,915.04x = 730,362.80 × 220,625.92
  4. Step 4: Simplify right side
    486,915.04x = 161,136,964,683.78
  5. Step 5: Solve for x
    x = 161,136,964,683.78/486,915.04
  6. Step 6: Final answer
    x = 330,934.46

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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.