Home / 258,381.47-356,542.21-239,338.10

Finding the Fourth Proportional to 258,381.47, 356,542.21 and 239,338.10

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Solution

The fourth proportional to 258,381.47, 356,542.21 and 239,338.10 is: 330,264.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,381.47 : 356,542.21 = 239,338.10 : x
  2. Step 2: Convert to fraction form
    258,381.47/356,542.21 = 239,338.10/x
  3. Step 3: Cross multiply
    258,381.47x = 356,542.21 × 239,338.10
  4. Step 4: Simplify right side
    258,381.47x = 85,334,135,111.20
  5. Step 5: Solve for x
    x = 85,334,135,111.20/258,381.47
  6. Step 6: Final answer
    x = 330,264.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.