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Finding the Fourth Proportional to 315,712.58, 435,676.23 and 172,473.26

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Solution

The fourth proportional to 315,712.58, 435,676.23 and 172,473.26 is: 238,009.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,712.58 : 435,676.23 = 172,473.26 : x
  2. Step 2: Convert to fraction form
    315,712.58/435,676.23 = 172,473.26/x
  3. Step 3: Cross multiply
    315,712.58x = 435,676.23 × 172,473.26
  4. Step 4: Simplify right side
    315,712.58x = 75,142,499,692.61
  5. Step 5: Solve for x
    x = 75,142,499,692.61/315,712.58
  6. Step 6: Final answer
    x = 238,009.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.