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Finding the Fourth Proportional to 216,969.50, 299,449.30 and 121,482.34

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Solution

The fourth proportional to 216,969.50, 299,449.30 and 121,482.34 is: 167,663.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,969.50 : 299,449.30 = 121,482.34 : x
  2. Step 2: Convert to fraction form
    216,969.50/299,449.30 = 121,482.34/x
  3. Step 3: Cross multiply
    216,969.50x = 299,449.30 × 121,482.34
  4. Step 4: Simplify right side
    216,969.50x = 36,377,801,675.36
  5. Step 5: Solve for x
    x = 36,377,801,675.36/216,969.50
  6. Step 6: Final answer
    x = 167,663.20

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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.