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Finding the Fourth Proportional to 315,017.39, 472,527.80 and 78,360.08

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Solution

The fourth proportional to 315,017.39, 472,527.80 and 78,360.08 is: 117,540.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,017.39 : 472,527.80 = 78,360.08 : x
  2. Step 2: Convert to fraction form
    315,017.39/472,527.80 = 78,360.08/x
  3. Step 3: Cross multiply
    315,017.39x = 472,527.80 × 78,360.08
  4. Step 4: Simplify right side
    315,017.39x = 37,027,313,455.78
  5. Step 5: Solve for x
    x = 37,027,313,455.78/315,017.39
  6. Step 6: Final answer
    x = 117,540.54

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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.