Home / 258,315.84-387,463.14-89,874.36

Finding the Fourth Proportional to 258,315.84, 387,463.14 and 89,874.36

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Solution

The fourth proportional to 258,315.84, 387,463.14 and 89,874.36 is: 134,807.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,315.84 : 387,463.14 = 89,874.36 : x
  2. Step 2: Convert to fraction form
    258,315.84/387,463.14 = 89,874.36/x
  3. Step 3: Cross multiply
    258,315.84x = 387,463.14 × 89,874.36
  4. Step 4: Simplify right side
    258,315.84x = 34,823,001,731.09
  5. Step 5: Solve for x
    x = 34,823,001,731.09/258,315.84
  6. Step 6: Final answer
    x = 134,807.85

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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.