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Finding the Fourth Proportional to 370,211.40, 555,317.10 and 89,728.65

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Solution

The fourth proportional to 370,211.40, 555,317.10 and 89,728.65 is: 134,592.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    370,211.40 : 555,317.10 = 89,728.65 : x
  2. Step 2: Convert to fraction form
    370,211.40/555,317.10 = 89,728.65/x
  3. Step 3: Cross multiply
    370,211.40x = 555,317.10 × 89,728.65
  4. Step 4: Simplify right side
    370,211.40x = 49,827,853,704.92
  5. Step 5: Solve for x
    x = 49,827,853,704.92/370,211.40
  6. Step 6: Final answer
    x = 134,592.98

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Similar ratio
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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.