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Finding the Fourth Proportional to 216,858.60, 299,264.40 and 121,383.72

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Solution

The fourth proportional to 216,858.60, 299,264.40 and 121,383.72 is: 167,509.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,858.60 : 299,264.40 = 121,383.72 : x
  2. Step 2: Convert to fraction form
    216,858.60/299,264.40 = 121,383.72/x
  3. Step 3: Cross multiply
    216,858.60x = 299,264.40 × 121,383.72
  4. Step 4: Simplify right side
    216,858.60x = 36,325,826,135.57
  5. Step 5: Solve for x
    x = 36,325,826,135.57/216,858.60
  6. Step 6: Final answer
    x = 167,509.27

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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.