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Finding the Fourth Proportional to 315,187.20, 473,947.20 and 263,865.60

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Solution

The fourth proportional to 315,187.20, 473,947.20 and 263,865.60 is: 396,774.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,187.20 : 473,947.20 = 263,865.60 : x
  2. Step 2: Convert to fraction form
    315,187.20/473,947.20 = 263,865.60/x
  3. Step 3: Cross multiply
    315,187.20x = 473,947.20 × 263,865.60
  4. Step 4: Simplify right side
    315,187.20x = 125,058,362,296.32
  5. Step 5: Solve for x
    x = 125,058,362,296.32/315,187.20
  6. Step 6: Final answer
    x = 396,774.88

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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.