Home / 390,264.23-585,351.62-102,103.69

Finding the Fourth Proportional to 390,264.23, 585,351.62 and 102,103.69

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Solution

The fourth proportional to 390,264.23, 585,351.62 and 102,103.69 is: 153,143.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,264.23 : 585,351.62 = 102,103.69 : x
  2. Step 2: Convert to fraction form
    390,264.23/585,351.62 = 102,103.69/x
  3. Step 3: Cross multiply
    390,264.23x = 585,351.62 × 102,103.69
  4. Step 4: Simplify right side
    390,264.23x = 59,766,559,141.36
  5. Step 5: Solve for x
    x = 59,766,559,141.36/390,264.23
  6. Step 6: Final answer
    x = 153,143.83

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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.