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Finding the Fourth Proportional to 364,854.78, 503,565.12 and 217,689.12

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Solution

The fourth proportional to 364,854.78, 503,565.12 and 217,689.12 is: 300,450.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    364,854.78 : 503,565.12 = 217,689.12 : x
  2. Step 2: Convert to fraction form
    364,854.78/503,565.12 = 217,689.12/x
  3. Step 3: Cross multiply
    364,854.78x = 503,565.12 × 217,689.12
  4. Step 4: Simplify right side
    364,854.78x = 109,620,647,835.49
  5. Step 5: Solve for x
    x = 109,620,647,835.49/364,854.78
  6. Step 6: Final answer
    x = 300,450.08

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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.