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Finding the Fourth Proportional to 359,913.19, 496,680.20 and 209,019.91

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Solution

The fourth proportional to 359,913.19, 496,680.20 and 209,019.91 is: 288,447.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,913.19 : 496,680.20 = 209,019.91 : x
  2. Step 2: Convert to fraction form
    359,913.19/496,680.20 = 209,019.91/x
  3. Step 3: Cross multiply
    359,913.19x = 496,680.20 × 209,019.91
  4. Step 4: Simplify right side
    359,913.19x = 103,816,049,983.63
  5. Step 5: Solve for x
    x = 103,816,049,983.63/359,913.19
  6. Step 6: Final answer
    x = 288,447.47

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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.