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Finding the Fourth Proportional to 381,330.45, 571,995.68 and 97,020.45

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Solution

The fourth proportional to 381,330.45, 571,995.68 and 97,020.45 is: 145,530.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,330.45 : 571,995.68 = 97,020.45 : x
  2. Step 2: Convert to fraction form
    381,330.45/571,995.68 = 97,020.45/x
  3. Step 3: Cross multiply
    381,330.45x = 571,995.68 × 97,020.45
  4. Step 4: Simplify right side
    381,330.45x = 55,495,277,786.55
  5. Step 5: Solve for x
    x = 55,495,277,786.55/381,330.45
  6. Step 6: Final answer
    x = 145,530.68

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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.