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Finding the Fourth Proportional to 391,960.80, 540,946.08 and 230,866.56

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Solution

The fourth proportional to 391,960.80, 540,946.08 and 230,866.56 is: 318,619.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,960.80 : 540,946.08 = 230,866.56 : x
  2. Step 2: Convert to fraction form
    391,960.80/540,946.08 = 230,866.56/x
  3. Step 3: Cross multiply
    391,960.80x = 540,946.08 × 230,866.56
  4. Step 4: Simplify right side
    391,960.80x = 124,886,360,635.09
  5. Step 5: Solve for x
    x = 124,886,360,635.09/391,960.80
  6. Step 6: Final answer
    x = 318,619.52

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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.