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Finding the Fourth Proportional to 315,010.58, 472,515.86 and 172,800.90

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Solution

The fourth proportional to 315,010.58, 472,515.86 and 172,800.90 is: 259,201.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,010.58 : 472,515.86 = 172,800.90 : x
  2. Step 2: Convert to fraction form
    315,010.58/472,515.86 = 172,800.90/x
  3. Step 3: Cross multiply
    315,010.58x = 472,515.86 × 172,800.90
  4. Step 4: Simplify right side
    315,010.58x = 81,651,166,304.28
  5. Step 5: Solve for x
    x = 81,651,166,304.28/315,010.58
  6. Step 6: Final answer
    x = 259,201.35

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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.