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Finding the Fourth Proportional to 315,111.80, 472,667.70 and 104,722.40

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Solution

The fourth proportional to 315,111.80, 472,667.70 and 104,722.40 is: 157,083.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,111.80 : 472,667.70 = 104,722.40 : x
  2. Step 2: Convert to fraction form
    315,111.80/472,667.70 = 104,722.40/x
  3. Step 3: Cross multiply
    315,111.80x = 472,667.70 × 104,722.40
  4. Step 4: Simplify right side
    315,111.80x = 49,498,895,946.48
  5. Step 5: Solve for x
    x = 49,498,895,946.48/315,111.80
  6. Step 6: Final answer
    x = 157,083.60

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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.