Home / 378,931.34-522,925.17-209,165.42

Finding the Fourth Proportional to 378,931.34, 522,925.17 and 209,165.42

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Solution

The fourth proportional to 378,931.34, 522,925.17 and 209,165.42 is: 288,648.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,931.34 : 522,925.17 = 209,165.42 : x
  2. Step 2: Convert to fraction form
    378,931.34/522,925.17 = 209,165.42/x
  3. Step 3: Cross multiply
    378,931.34x = 522,925.17 × 209,165.42
  4. Step 4: Simplify right side
    378,931.34x = 109,377,862,811.62
  5. Step 5: Solve for x
    x = 109,377,862,811.62/378,931.34
  6. Step 6: Final answer
    x = 288,648.24

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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.