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Finding the Fourth Proportional to 216,966.50, 299,445.16 and 121,479.34

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Solution

The fourth proportional to 216,966.50, 299,445.16 and 121,479.34 is: 167,659.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,966.50 : 299,445.16 = 121,479.34 : x
  2. Step 2: Convert to fraction form
    216,966.50/299,445.16 = 121,479.34/x
  3. Step 3: Cross multiply
    216,966.50x = 299,445.16 × 121,479.34
  4. Step 4: Simplify right side
    216,966.50x = 36,376,400,402.99
  5. Step 5: Solve for x
    x = 36,376,400,402.99/216,966.50
  6. Step 6: Final answer
    x = 167,659.06

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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.