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Finding the Fourth Proportional to 315,240.90, 472,904.55 and 104,856.90

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Solution

The fourth proportional to 315,240.90, 472,904.55 and 104,856.90 is: 157,299.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,240.90 : 472,904.55 = 104,856.90 : x
  2. Step 2: Convert to fraction form
    315,240.90/472,904.55 = 104,856.90/x
  3. Step 3: Cross multiply
    315,240.90x = 472,904.55 × 104,856.90
  4. Step 4: Simplify right side
    315,240.90x = 49,587,305,108.90
  5. Step 5: Solve for x
    x = 49,587,305,108.90/315,240.90
  6. Step 6: Final answer
    x = 157,299.72

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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.