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Finding the Fourth Proportional to 289,802.52, 434,705.28 and 131,920.56

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Solution

The fourth proportional to 289,802.52, 434,705.28 and 131,920.56 is: 197,881.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,802.52 : 434,705.28 = 131,920.56 : x
  2. Step 2: Convert to fraction form
    289,802.52/434,705.28 = 131,920.56/x
  3. Step 3: Cross multiply
    289,802.52x = 434,705.28 × 131,920.56
  4. Step 4: Simplify right side
    289,802.52x = 57,346,563,972.56
  5. Step 5: Solve for x
    x = 57,346,563,972.56/289,802.52
  6. Step 6: Final answer
    x = 197,881.52

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1.5x scale

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.