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Finding the Fourth Proportional to 315,063.04, 472,186.32 and 127,972.48

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Solution

The fourth proportional to 315,063.04, 472,186.32 and 127,972.48 is: 191,792.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,063.04 : 472,186.32 = 127,972.48 : x
  2. Step 2: Convert to fraction form
    315,063.04/472,186.32 = 127,972.48/x
  3. Step 3: Cross multiply
    315,063.04x = 472,186.32 × 127,972.48
  4. Step 4: Simplify right side
    315,063.04x = 60,426,854,392.47
  5. Step 5: Solve for x
    x = 60,426,854,392.47/315,063.04
  6. Step 6: Final answer
    x = 191,792.90

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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.