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Finding the Fourth Proportional to 376,454.12, 519,602.63 and 215,359.70

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Solution

The fourth proportional to 376,454.12, 519,602.63 and 215,359.70 is: 297,251.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    376,454.12 : 519,602.63 = 215,359.70 : x
  2. Step 2: Convert to fraction form
    376,454.12/519,602.63 = 215,359.70/x
  3. Step 3: Cross multiply
    376,454.12x = 519,602.63 × 215,359.70
  4. Step 4: Simplify right side
    376,454.12x = 111,901,462,841.20
  5. Step 5: Solve for x
    x = 111,901,462,841.20/376,454.12
  6. Step 6: Final answer
    x = 297,251.27

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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.