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Finding the Fourth Proportional to 315,994.66, 436,074.17 and 172,754.71

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Solution

The fourth proportional to 315,994.66, 436,074.17 and 172,754.71 is: 238,402.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,994.66 : 436,074.17 = 172,754.71 : x
  2. Step 2: Convert to fraction form
    315,994.66/436,074.17 = 172,754.71/x
  3. Step 3: Cross multiply
    315,994.66x = 436,074.17 × 172,754.71
  4. Step 4: Simplify right side
    315,994.66x = 75,333,866,776.84
  5. Step 5: Solve for x
    x = 75,333,866,776.84/315,994.66
  6. Step 6: Final answer
    x = 238,402.34

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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.