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Finding the Fourth Proportional to 581,508.50, 872,262.75 and 155,045.78

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Solution

The fourth proportional to 581,508.50, 872,262.75 and 155,045.78 is: 232,568.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    581,508.50 : 872,262.75 = 155,045.78 : x
  2. Step 2: Convert to fraction form
    581,508.50/872,262.75 = 155,045.78/x
  3. Step 3: Cross multiply
    581,508.50x = 872,262.75 × 155,045.78
  4. Step 4: Simplify right side
    581,508.50x = 135,240,658,438.70
  5. Step 5: Solve for x
    x = 135,240,658,438.70/581,508.50
  6. Step 6: Final answer
    x = 232,568.67

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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.