Home / 390,016.32-585,073.04-137,237.12

Finding the Fourth Proportional to 390,016.32, 585,073.04 and 137,237.12

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Solution

The fourth proportional to 390,016.32, 585,073.04 and 137,237.12 is: 205,872.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,016.32 : 585,073.04 = 137,237.12 : x
  2. Step 2: Convert to fraction form
    390,016.32/585,073.04 = 137,237.12/x
  3. Step 3: Cross multiply
    390,016.32x = 585,073.04 × 137,237.12
  4. Step 4: Simplify right side
    390,016.32x = 80,293,738,999.24
  5. Step 5: Solve for x
    x = 80,293,738,999.24/390,016.32
  6. Step 6: Final answer
    x = 205,872.77

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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.