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Finding the Fourth Proportional to 215,117.70, 322,676.55 and 144,258.90

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Solution

The fourth proportional to 215,117.70, 322,676.55 and 144,258.90 is: 216,388.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,117.70 : 322,676.55 = 144,258.90 : x
  2. Step 2: Convert to fraction form
    215,117.70/322,676.55 = 144,258.90/x
  3. Step 3: Cross multiply
    215,117.70x = 322,676.55 × 144,258.90
  4. Step 4: Simplify right side
    215,117.70x = 46,548,964,158.80
  5. Step 5: Solve for x
    x = 46,548,964,158.80/215,117.70
  6. Step 6: Final answer
    x = 216,388.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.