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Finding the Fourth Proportional to 443,417.80, 665,126.70 and 163,136.20

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Solution

The fourth proportional to 443,417.80, 665,126.70 and 163,136.20 is: 244,704.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,417.80 : 665,126.70 = 163,136.20 : x
  2. Step 2: Convert to fraction form
    443,417.80/665,126.70 = 163,136.20/x
  3. Step 3: Cross multiply
    443,417.80x = 665,126.70 × 163,136.20
  4. Step 4: Simplify right side
    443,417.80x = 108,506,242,356.54
  5. Step 5: Solve for x
    x = 108,506,242,356.54/443,417.80
  6. Step 6: Final answer
    x = 244,704.30

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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.