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Finding the Fourth Proportional to 376,879.16, 520,068.78 and 215,735.48

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Solution

The fourth proportional to 376,879.16, 520,068.78 and 215,735.48 is: 297,700.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    376,879.16 : 520,068.78 = 215,735.48 : x
  2. Step 2: Convert to fraction form
    376,879.16/520,068.78 = 215,735.48/x
  3. Step 3: Cross multiply
    376,879.16x = 520,068.78 × 215,735.48
  4. Step 4: Simplify right side
    376,879.16x = 112,197,287,886.31
  5. Step 5: Solve for x
    x = 112,197,287,886.31/376,879.16
  6. Step 6: Final answer
    x = 297,700.96

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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.