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Finding the Fourth Proportional to 289,059.40, 433,664.70 and 111,572.20

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Solution

The fourth proportional to 289,059.40, 433,664.70 and 111,572.20 is: 167,387.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,059.40 : 433,664.70 = 111,572.20 : x
  2. Step 2: Convert to fraction form
    289,059.40/433,664.70 = 111,572.20/x
  3. Step 3: Cross multiply
    289,059.40x = 433,664.70 × 111,572.20
  4. Step 4: Simplify right side
    289,059.40x = 48,384,924,641.34
  5. Step 5: Solve for x
    x = 48,384,924,641.34/289,059.40
  6. Step 6: Final answer
    x = 167,387.48

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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.