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Finding the Fourth Proportional to 409,211.71, 564,740.55 and 248,073.55

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Solution

The fourth proportional to 409,211.71, 564,740.55 and 248,073.55 is: 342,358.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    409,211.71 : 564,740.55 = 248,073.55 : x
  2. Step 2: Convert to fraction form
    409,211.71/564,740.55 = 248,073.55/x
  3. Step 3: Cross multiply
    409,211.71x = 564,740.55 × 248,073.55
  4. Step 4: Simplify right side
    409,211.71x = 140,097,191,655.60
  5. Step 5: Solve for x
    x = 140,097,191,655.60/409,211.71
  6. Step 6: Final answer
    x = 342,358.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.