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Finding the Fourth Proportional to 209,375.96, 288,932.80 and 118,740.30

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Solution

The fourth proportional to 209,375.96, 288,932.80 and 118,740.30 is: 163,858.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,375.96 : 288,932.80 = 118,740.30 : x
  2. Step 2: Convert to fraction form
    209,375.96/288,932.80 = 118,740.30/x
  3. Step 3: Cross multiply
    209,375.96x = 288,932.80 × 118,740.30
  4. Step 4: Simplify right side
    209,375.96x = 34,307,967,351.84
  5. Step 5: Solve for x
    x = 34,307,967,351.84/209,375.96
  6. Step 6: Final answer
    x = 163,858.20

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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.