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Finding the Fourth Proportional to 259,693.48, 389,208.54 and 147,290.92

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Solution

The fourth proportional to 259,693.48, 389,208.54 and 147,290.92 is: 220,748.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,693.48 : 389,208.54 = 147,290.92 : x
  2. Step 2: Convert to fraction form
    259,693.48/389,208.54 = 147,290.92/x
  3. Step 3: Cross multiply
    259,693.48x = 389,208.54 × 147,290.92
  4. Step 4: Simplify right side
    259,693.48x = 57,326,883,928.46
  5. Step 5: Solve for x
    x = 57,326,883,928.46/259,693.48
  6. Step 6: Final answer
    x = 220,748.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.