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Finding the Fourth Proportional to 290,446.28, 435,839.95 and 121,953.65

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Solution

The fourth proportional to 290,446.28, 435,839.95 and 121,953.65 is: 183,002.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,446.28 : 435,839.95 = 121,953.65 : x
  2. Step 2: Convert to fraction form
    290,446.28/435,839.95 = 121,953.65/x
  3. Step 3: Cross multiply
    290,446.28x = 435,839.95 × 121,953.65
  4. Step 4: Simplify right side
    290,446.28x = 53,152,273,503.03
  5. Step 5: Solve for x
    x = 53,152,273,503.03/290,446.28
  6. Step 6: Final answer
    x = 183,002.08

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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.