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Finding the Fourth Proportional to 376,899, 520,140.48 and 213,587.16

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Solution

The fourth proportional to 376,899, 520,140.48 and 213,587.16 is: 294,761.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    376,899 : 520,140.48 = 213,587.16 : x
  2. Step 2: Convert to fraction form
    376,899/520,140.48 = 213,587.16/x
  3. Step 3: Cross multiply
    376,899x = 520,140.48 × 213,587.16
  4. Step 4: Simplify right side
    376,899x = 111,095,327,924.24
  5. Step 5: Solve for x
    x = 111,095,327,924.24/376,899
  6. Step 6: Final answer
    x = 294,761.54

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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.