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Finding the Fourth Proportional to 391,300.80, 540,123.36 and 230,147.52

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Solution

The fourth proportional to 391,300.80, 540,123.36 and 230,147.52 is: 317,679.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,300.80 : 540,123.36 = 230,147.52 : x
  2. Step 2: Convert to fraction form
    391,300.80/540,123.36 = 230,147.52/x
  3. Step 3: Cross multiply
    391,300.80x = 540,123.36 × 230,147.52
  4. Step 4: Simplify right side
    391,300.80x = 124,308,051,798.07
  5. Step 5: Solve for x
    x = 124,308,051,798.07/391,300.80
  6. Step 6: Final answer
    x = 317,679.01

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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.