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Finding the Fourth Proportional to 209,285.56, 288,924.42 and 168,000.40

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Solution

The fourth proportional to 209,285.56, 288,924.42 and 168,000.40 is: 231,929.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,285.56 : 288,924.42 = 168,000.40 : x
  2. Step 2: Convert to fraction form
    209,285.56/288,924.42 = 168,000.40/x
  3. Step 3: Cross multiply
    209,285.56x = 288,924.42 × 168,000.40
  4. Step 4: Simplify right side
    209,285.56x = 48,539,418,129.77
  5. Step 5: Solve for x
    x = 48,539,418,129.77/209,285.56
  6. Step 6: Final answer
    x = 231,929.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.