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Finding the Fourth Proportional to 391,544.16, 540,319.80 and 230,362.24

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Solution

The fourth proportional to 391,544.16, 540,319.80 and 230,362.24 is: 317,893.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,544.16 : 540,319.80 = 230,362.24 : x
  2. Step 2: Convert to fraction form
    391,544.16/540,319.80 = 230,362.24/x
  3. Step 3: Cross multiply
    391,544.16x = 540,319.80 × 230,362.24
  4. Step 4: Simplify right side
    391,544.16x = 124,469,279,444.35
  5. Step 5: Solve for x
    x = 124,469,279,444.35/391,544.16
  6. Step 6: Final answer
    x = 317,893.34

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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.