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Finding the Fourth Proportional to 315,210.40, 472,858.80 and 104,826.40

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Solution

The fourth proportional to 315,210.40, 472,858.80 and 104,826.40 is: 157,253.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,210.40 : 472,858.80 = 104,826.40 : x
  2. Step 2: Convert to fraction form
    315,210.40/472,858.80 = 104,826.40/x
  3. Step 3: Cross multiply
    315,210.40x = 472,858.80 × 104,826.40
  4. Step 4: Simplify right side
    315,210.40x = 49,568,085,712.32
  5. Step 5: Solve for x
    x = 49,568,085,712.32/315,210.40
  6. Step 6: Final answer
    x = 157,253.97

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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.