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Finding the Fourth Proportional to 215,867.40, 323,801.10 and 152,881.80

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Solution

The fourth proportional to 215,867.40, 323,801.10 and 152,881.80 is: 229,322.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,867.40 : 323,801.10 = 152,881.80 : x
  2. Step 2: Convert to fraction form
    215,867.40/323,801.10 = 152,881.80/x
  3. Step 3: Cross multiply
    215,867.40x = 323,801.10 × 152,881.80
  4. Step 4: Simplify right side
    215,867.40x = 49,503,295,009.98
  5. Step 5: Solve for x
    x = 49,503,295,009.98/215,867.40
  6. Step 6: Final answer
    x = 229,322.70

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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.