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Finding the Fourth Proportional to 542,136.70, 748,153.04 and 300,423.30

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Solution

The fourth proportional to 542,136.70, 748,153.04 and 300,423.30 is: 414,586.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    542,136.70 : 748,153.04 = 300,423.30 : x
  2. Step 2: Convert to fraction form
    542,136.70/748,153.04 = 300,423.30/x
  3. Step 3: Cross multiply
    542,136.70x = 748,153.04 × 300,423.30
  4. Step 4: Simplify right side
    542,136.70x = 224,762,605,181.83
  5. Step 5: Solve for x
    x = 224,762,605,181.83/542,136.70
  6. Step 6: Final answer
    x = 414,586.59

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1.5x scale

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.