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Finding the Fourth Proportional to 290,095.20, 434,797.20 and 121,615.20

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Solution

The fourth proportional to 290,095.20, 434,797.20 and 121,615.20 is: 182,277.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,095.20 : 434,797.20 = 121,615.20 : x
  2. Step 2: Convert to fraction form
    290,095.20/434,797.20 = 121,615.20/x
  3. Step 3: Cross multiply
    290,095.20x = 434,797.20 × 121,615.20
  4. Step 4: Simplify right side
    290,095.20x = 52,877,948,437.44
  5. Step 5: Solve for x
    x = 52,877,948,437.44/290,095.20
  6. Step 6: Final answer
    x = 182,277.92

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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.