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Finding the Fourth Proportional to 315,026.80, 472,540.20 and 315,026.80

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Solution

The fourth proportional to 315,026.80, 472,540.20 and 315,026.80 is: 472,540.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,026.80 : 472,540.20 = 315,026.80 : x
  2. Step 2: Convert to fraction form
    315,026.80/472,540.20 = 315,026.80/x
  3. Step 3: Cross multiply
    315,026.80x = 472,540.20 × 315,026.80
  4. Step 4: Simplify right side
    315,026.80x = 148,862,827,077.36
  5. Step 5: Solve for x
    x = 148,862,827,077.36/315,026.80
  6. Step 6: Final answer
    x = 472,540.20

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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.