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Finding the Fourth Proportional to 315,242.61, 472,868.04 and 104,880.55

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Solution

The fourth proportional to 315,242.61, 472,868.04 and 104,880.55 is: 157,322.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,242.61 : 472,868.04 = 104,880.55 : x
  2. Step 2: Convert to fraction form
    315,242.61/472,868.04 = 104,880.55/x
  3. Step 3: Cross multiply
    315,242.61x = 472,868.04 × 104,880.55
  4. Step 4: Simplify right side
    315,242.61x = 49,594,660,112.62
  5. Step 5: Solve for x
    x = 49,594,660,112.62/315,242.61
  6. Step 6: Final answer
    x = 157,322.20

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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.