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Finding the Fourth Proportional to 315,580.39, 435,504.40 and 172,344.65

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Solution

The fourth proportional to 315,580.39, 435,504.40 and 172,344.65 is: 237,837.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,580.39 : 435,504.40 = 172,344.65 : x
  2. Step 2: Convert to fraction form
    315,580.39/435,504.40 = 172,344.65/x
  3. Step 3: Cross multiply
    315,580.39x = 435,504.40 × 172,344.65
  4. Step 4: Simplify right side
    315,580.39x = 75,056,850,783.08
  5. Step 5: Solve for x
    x = 75,056,850,783.08/315,580.39
  6. Step 6: Final answer
    x = 237,837.50

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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.