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Finding the Fourth Proportional to 370,489.80, 555,729.84 and 90,006.24

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Solution

The fourth proportional to 370,489.80, 555,729.84 and 90,006.24 is: 135,008.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,489.80 : 555,729.84 = 90,006.24 : x
  2. Step 2: Convert to fraction form
    370,489.80/555,729.84 = 90,006.24/x
  3. Step 3: Cross multiply
    370,489.80x = 555,729.84 × 90,006.24
  4. Step 4: Simplify right side
    370,489.80x = 50,019,153,354.20
  5. Step 5: Solve for x
    x = 50,019,153,354.20/370,489.80
  6. Step 6: Final answer
    x = 135,008.18

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1.5x scale

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.