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Finding the Fourth Proportional to 448,488.10, 619,063.53 and 267,256.87

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Solution

The fourth proportional to 448,488.10, 619,063.53 and 267,256.87 is: 368,903.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,488.10 : 619,063.53 = 267,256.87 : x
  2. Step 2: Convert to fraction form
    448,488.10/619,063.53 = 267,256.87/x
  3. Step 3: Cross multiply
    448,488.10x = 619,063.53 × 267,256.87
  4. Step 4: Simplify right side
    448,488.10x = 165,448,981,358.95
  5. Step 5: Solve for x
    x = 165,448,981,358.95/448,488.10
  6. Step 6: Final answer
    x = 368,903.84

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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.