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Finding the Fourth Proportional to 316,073.57, 435,808.82 and 255,456.77

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Solution

The fourth proportional to 316,073.57, 435,808.82 and 255,456.77 is: 352,229.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,073.57 : 435,808.82 = 255,456.77 : x
  2. Step 2: Convert to fraction form
    316,073.57/435,808.82 = 255,456.77/x
  3. Step 3: Cross multiply
    316,073.57x = 435,808.82 × 255,456.77
  4. Step 4: Simplify right side
    316,073.57x = 111,330,310,038.38
  5. Step 5: Solve for x
    x = 111,330,310,038.38/316,073.57
  6. Step 6: Final answer
    x = 352,229.11

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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.