Home / 390,110.32-585,334.51-137,571.25

Finding the Fourth Proportional to 390,110.32, 585,334.51 and 137,571.25

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Solution

The fourth proportional to 390,110.32, 585,334.51 and 137,571.25 is: 206,416.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,110.32 : 585,334.51 = 137,571.25 : x
  2. Step 2: Convert to fraction form
    390,110.32/585,334.51 = 137,571.25/x
  3. Step 3: Cross multiply
    390,110.32x = 585,334.51 × 137,571.25
  4. Step 4: Simplify right side
    390,110.32x = 80,525,197,282.17
  5. Step 5: Solve for x
    x = 80,525,197,282.17/390,110.32
  6. Step 6: Final answer
    x = 206,416.48

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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.