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Finding the Fourth Proportional to 289,950.70, 434,580.45 and 121,470.70

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Solution

The fourth proportional to 289,950.70, 434,580.45 and 121,470.70 is: 182,061.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,950.70 : 434,580.45 = 121,470.70 : x
  2. Step 2: Convert to fraction form
    289,950.70/434,580.45 = 121,470.70/x
  3. Step 3: Cross multiply
    289,950.70x = 434,580.45 × 121,470.70
  4. Step 4: Simplify right side
    289,950.70x = 52,788,791,467.82
  5. Step 5: Solve for x
    x = 52,788,791,467.82/289,950.70
  6. Step 6: Final answer
    x = 182,061.27

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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.