Home / 258,230.61-387,368.23-71,242.11

Finding the Fourth Proportional to 258,230.61, 387,368.23 and 71,242.11

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Solution

The fourth proportional to 258,230.61, 387,368.23 and 71,242.11 is: 106,869.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,230.61 : 387,368.23 = 71,242.11 : x
  2. Step 2: Convert to fraction form
    258,230.61/387,368.23 = 71,242.11/x
  3. Step 3: Cross multiply
    258,230.61x = 387,368.23 × 71,242.11
  4. Step 4: Simplify right side
    258,230.61x = 27,596,930,052.17
  5. Step 5: Solve for x
    x = 27,596,930,052.17/258,230.61
  6. Step 6: Final answer
    x = 106,869.32

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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.