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Finding the Fourth Proportional to 315,187.84, 434,950.61 and 171,947.85

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Solution

The fourth proportional to 315,187.84, 434,950.61 and 171,947.85 is: 237,283.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,187.84 : 434,950.61 = 171,947.85 : x
  2. Step 2: Convert to fraction form
    315,187.84/434,950.61 = 171,947.85/x
  3. Step 3: Cross multiply
    315,187.84x = 434,950.61 × 171,947.85
  4. Step 4: Simplify right side
    315,187.84x = 74,788,820,722.09
  5. Step 5: Solve for x
    x = 74,788,820,722.09/315,187.84
  6. Step 6: Final answer
    x = 237,283.33

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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.