Home / 258,612.24-387,918.90-71,624.28

Finding the Fourth Proportional to 258,612.24, 387,918.90 and 71,624.28

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Solution

The fourth proportional to 258,612.24, 387,918.90 and 71,624.28 is: 107,436.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,612.24 : 387,918.90 = 71,624.28 : x
  2. Step 2: Convert to fraction form
    258,612.24/387,918.90 = 71,624.28/x
  3. Step 3: Cross multiply
    258,612.24x = 387,918.90 × 71,624.28
  4. Step 4: Simplify right side
    258,612.24x = 27,784,411,910.89
  5. Step 5: Solve for x
    x = 27,784,411,910.89/258,612.24
  6. Step 6: Final answer
    x = 107,436.57

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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.