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Finding the Fourth Proportional to 391,464.06, 540,194.84 and 230,287.98

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Solution

The fourth proportional to 391,464.06, 540,194.84 and 230,287.98 is: 317,782.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,464.06 : 540,194.84 = 230,287.98 : x
  2. Step 2: Convert to fraction form
    391,464.06/540,194.84 = 230,287.98/x
  3. Step 3: Cross multiply
    391,464.06x = 540,194.84 × 230,287.98
  4. Step 4: Simplify right side
    391,464.06x = 124,400,378,510.02
  5. Step 5: Solve for x
    x = 124,400,378,510.02/391,464.06
  6. Step 6: Final answer
    x = 317,782.37

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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.