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Finding the Fourth Proportional to 209,587.62, 313,415.72 and 155,654.15

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Solution

The fourth proportional to 209,587.62, 313,415.72 and 155,654.15 is: 232,764.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,587.62 : 313,415.72 = 155,654.15 : x
  2. Step 2: Convert to fraction form
    209,587.62/313,415.72 = 155,654.15/x
  3. Step 3: Cross multiply
    209,587.62x = 313,415.72 × 155,654.15
  4. Step 4: Simplify right side
    209,587.62x = 48,784,455,147.89
  5. Step 5: Solve for x
    x = 48,784,455,147.89/209,587.62
  6. Step 6: Final answer
    x = 232,764.01

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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.