Home / 258,266.07-387,177.20-89,764.51

Finding the Fourth Proportional to 258,266.07, 387,177.20 and 89,764.51

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Solution

The fourth proportional to 258,266.07, 387,177.20 and 89,764.51 is: 134,569.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,266.07 : 387,177.20 = 89,764.51 : x
  2. Step 2: Convert to fraction form
    258,266.07/387,177.20 = 89,764.51/x
  3. Step 3: Cross multiply
    258,266.07x = 387,177.20 × 89,764.51
  4. Step 4: Simplify right side
    258,266.07x = 34,754,771,641.17
  5. Step 5: Solve for x
    x = 34,754,771,641.17/258,266.07
  6. Step 6: Final answer
    x = 134,569.64

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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.