Home / 322,948.16-445,416-209,807.36

Finding the Fourth Proportional to 322,948.16, 445,416 and 209,807.36

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Solution

The fourth proportional to 322,948.16, 445,416 and 209,807.36 is: 289,370.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    322,948.16 : 445,416 = 209,807.36 : x
  2. Step 2: Convert to fraction form
    322,948.16/445,416 = 209,807.36/x
  3. Step 3: Cross multiply
    322,948.16x = 445,416 × 209,807.36
  4. Step 4: Simplify right side
    322,948.16x = 93,451,555,061.76
  5. Step 5: Solve for x
    x = 93,451,555,061.76/322,948.16
  6. Step 6: Final answer
    x = 289,370.14

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.