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Finding the Fourth Proportional to 215,801.60, 323,799.60 and 103,438.40

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Solution

The fourth proportional to 215,801.60, 323,799.60 and 103,438.40 is: 155,204.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,801.60 : 323,799.60 = 103,438.40 : x
  2. Step 2: Convert to fraction form
    215,801.60/323,799.60 = 103,438.40/x
  3. Step 3: Cross multiply
    215,801.60x = 323,799.60 × 103,438.40
  4. Step 4: Simplify right side
    215,801.60x = 33,493,312,544.64
  5. Step 5: Solve for x
    x = 33,493,312,544.64/215,801.60
  6. Step 6: Final answer
    x = 155,204.19

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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.