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Finding the Fourth Proportional to 317,257.36, 437,894.76 and 215,455.12

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Solution

The fourth proportional to 317,257.36, 437,894.76 and 215,455.12 is: 297,382.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,257.36 : 437,894.76 = 215,455.12 : x
  2. Step 2: Convert to fraction form
    317,257.36/437,894.76 = 215,455.12/x
  3. Step 3: Cross multiply
    317,257.36x = 437,894.76 × 215,455.12
  4. Step 4: Simplify right side
    317,257.36x = 94,346,668,063.17
  5. Step 5: Solve for x
    x = 94,346,668,063.17/317,257.36
  6. Step 6: Final answer
    x = 297,382.13

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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.