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Finding the Fourth Proportional to 315,950.94, 436,012.27 and 172,711.55

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Solution

The fourth proportional to 315,950.94, 436,012.27 and 172,711.55 is: 238,341.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,950.94 : 436,012.27 = 172,711.55 : x
  2. Step 2: Convert to fraction form
    315,950.94/436,012.27 = 172,711.55/x
  3. Step 3: Cross multiply
    315,950.94x = 436,012.27 × 172,711.55
  4. Step 4: Simplify right side
    315,950.94x = 75,304,355,628.97
  5. Step 5: Solve for x
    x = 75,304,355,628.97/315,950.94
  6. Step 6: Final answer
    x = 238,341.93

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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.