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Finding the Fourth Proportional to 289,868.60, 434,586.90 and 149,727.80

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Solution

The fourth proportional to 289,868.60, 434,586.90 and 149,727.80 is: 224,480.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,868.60 : 434,586.90 = 149,727.80 : x
  2. Step 2: Convert to fraction form
    289,868.60/434,586.90 = 149,727.80/x
  3. Step 3: Cross multiply
    289,868.60x = 434,586.90 × 149,727.80
  4. Step 4: Simplify right side
    289,868.60x = 65,069,740,445.82
  5. Step 5: Solve for x
    x = 65,069,740,445.82/289,868.60
  6. Step 6: Final answer
    x = 224,480.13

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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.