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Finding the Fourth Proportional to 259,968.60, 389,952.90 and 147,605.40

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Solution

The fourth proportional to 259,968.60, 389,952.90 and 147,605.40 is: 221,408.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,968.60 : 389,952.90 = 147,605.40 : x
  2. Step 2: Convert to fraction form
    259,968.60/389,952.90 = 147,605.40/x
  3. Step 3: Cross multiply
    259,968.60x = 389,952.90 × 147,605.40
  4. Step 4: Simplify right side
    259,968.60x = 57,559,153,785.66
  5. Step 5: Solve for x
    x = 57,559,153,785.66/259,968.60
  6. Step 6: Final answer
    x = 221,408.10

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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.