Home / 258,360.96-387,583.01-89,929.15

Finding the Fourth Proportional to 258,360.96, 387,583.01 and 89,929.15

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Solution

The fourth proportional to 258,360.96, 387,583.01 and 89,929.15 is: 134,908.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,360.96 : 387,583.01 = 89,929.15 : x
  2. Step 2: Convert to fraction form
    258,360.96/387,583.01 = 89,929.15/x
  3. Step 3: Cross multiply
    258,360.96x = 387,583.01 × 89,929.15
  4. Step 4: Simplify right side
    258,360.96x = 34,855,011,742.53
  5. Step 5: Solve for x
    x = 34,855,011,742.53/258,360.96
  6. Step 6: Final answer
    x = 134,908.20

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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.