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Finding the Fourth Proportional to 280,693.22, 421,354.56 and 112,330.89

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Solution

The fourth proportional to 280,693.22, 421,354.56 and 112,330.89 is: 168,622.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,693.22 : 421,354.56 = 112,330.89 : x
  2. Step 2: Convert to fraction form
    280,693.22/421,354.56 = 112,330.89/x
  3. Step 3: Cross multiply
    280,693.22x = 421,354.56 × 112,330.89
  4. Step 4: Simplify right side
    280,693.22x = 47,331,132,730.36
  5. Step 5: Solve for x
    x = 47,331,132,730.36/280,693.22
  6. Step 6: Final answer
    x = 168,622.29

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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.