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Finding the Fourth Proportional to 542,145.45, 748,165.15 and 300,432.06

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Solution

The fourth proportional to 542,145.45, 748,165.15 and 300,432.06 is: 414,598.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    542,145.45 : 748,165.15 = 300,432.06 : x
  2. Step 2: Convert to fraction form
    542,145.45/748,165.15 = 300,432.06/x
  3. Step 3: Cross multiply
    542,145.45x = 748,165.15 × 300,432.06
  4. Step 4: Simplify right side
    542,145.45x = 224,772,797,234.71
  5. Step 5: Solve for x
    x = 224,772,797,234.71/542,145.45
  6. Step 6: Final answer
    x = 414,598.70

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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.