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Finding the Fourth Proportional to 315,234.84, 435,015.62 and 171,994.84

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Solution

The fourth proportional to 315,234.84, 435,015.62 and 171,994.84 is: 237,348.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,234.84 : 435,015.62 = 171,994.84 : x
  2. Step 2: Convert to fraction form
    315,234.84/435,015.62 = 171,994.84/x
  3. Step 3: Cross multiply
    315,234.84x = 435,015.62 × 171,994.84
  4. Step 4: Simplify right side
    315,234.84x = 74,820,441,959.40
  5. Step 5: Solve for x
    x = 74,820,441,959.40/315,234.84
  6. Step 6: Final answer
    x = 237,348.26

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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.