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Finding the Fourth Proportional to 385,608.04, 532,123.62 and 215,858.92

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Solution

The fourth proportional to 385,608.04, 532,123.62 and 215,858.92 is: 297,876.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,608.04 : 532,123.62 = 215,858.92 : x
  2. Step 2: Convert to fraction form
    385,608.04/532,123.62 = 215,858.92/x
  3. Step 3: Cross multiply
    385,608.04x = 532,123.62 × 215,858.92
  4. Step 4: Simplify right side
    385,608.04x = 114,863,629,919.69
  5. Step 5: Solve for x
    x = 114,863,629,919.69/385,608.04
  6. Step 6: Final answer
    x = 297,876.65

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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.