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Finding the Fourth Proportional to 145,217.70, 217,826.55 and 38,601.45

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Solution

The fourth proportional to 145,217.70, 217,826.55 and 38,601.45 is: 57,902.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,217.70 : 217,826.55 = 38,601.45 : x
  2. Step 2: Convert to fraction form
    145,217.70/217,826.55 = 38,601.45/x
  3. Step 3: Cross multiply
    145,217.70x = 217,826.55 × 38,601.45
  4. Step 4: Simplify right side
    145,217.70x = 8,408,420,678.50
  5. Step 5: Solve for x
    x = 8,408,420,678.50/145,217.70
  6. Step 6: Final answer
    x = 57,902.18

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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.