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Finding the Fourth Proportional to 215,672.40, 323,508.60 and 57,916.80

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Solution

The fourth proportional to 215,672.40, 323,508.60 and 57,916.80 is: 86,875.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,672.40 : 323,508.60 = 57,916.80 : x
  2. Step 2: Convert to fraction form
    215,672.40/323,508.60 = 57,916.80/x
  3. Step 3: Cross multiply
    215,672.40x = 323,508.60 × 57,916.80
  4. Step 4: Simplify right side
    215,672.40x = 18,736,582,884.48
  5. Step 5: Solve for x
    x = 18,736,582,884.48/215,672.40
  6. Step 6: Final answer
    x = 86,875.20

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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.