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Finding the Fourth Proportional to 370,300.80, 555,451.20 and 89,817.60

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Solution

The fourth proportional to 370,300.80, 555,451.20 and 89,817.60 is: 134,726.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,300.80 : 555,451.20 = 89,817.60 : x
  2. Step 2: Convert to fraction form
    370,300.80/555,451.20 = 89,817.60/x
  3. Step 3: Cross multiply
    370,300.80x = 555,451.20 × 89,817.60
  4. Step 4: Simplify right side
    370,300.80x = 49,889,293,701.12
  5. Step 5: Solve for x
    x = 49,889,293,701.12/370,300.80
  6. Step 6: Final answer
    x = 134,726.40

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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.