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Finding the Fourth Proportional to 256,520.19, 384,780.29 and 69,531.69

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Solution

The fourth proportional to 256,520.19, 384,780.29 and 69,531.69 is: 104,297.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,520.19 : 384,780.29 = 69,531.69 : x
  2. Step 2: Convert to fraction form
    256,520.19/384,780.29 = 69,531.69/x
  3. Step 3: Cross multiply
    256,520.19x = 384,780.29 × 69,531.69
  4. Step 4: Simplify right side
    256,520.19x = 26,754,423,494.73
  5. Step 5: Solve for x
    x = 26,754,423,494.73/256,520.19
  6. Step 6: Final answer
    x = 104,297.54

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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.