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Finding the Fourth Proportional to 216,953.34, 299,406.87 and 121,454.34

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Solution

The fourth proportional to 216,953.34, 299,406.87 and 121,454.34 is: 167,613.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,953.34 : 299,406.87 = 121,454.34 : x
  2. Step 2: Convert to fraction form
    216,953.34/299,406.87 = 121,454.34/x
  3. Step 3: Cross multiply
    216,953.34x = 299,406.87 × 121,454.34
  4. Step 4: Simplify right side
    216,953.34x = 36,364,263,787.32
  5. Step 5: Solve for x
    x = 36,364,263,787.32/216,953.34
  6. Step 6: Final answer
    x = 167,613.29

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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.