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Finding the Fourth Proportional to 315,950.77, 436,012.14 and 172,711.45

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Solution

The fourth proportional to 315,950.77, 436,012.14 and 172,711.45 is: 238,341.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,950.77 : 436,012.14 = 172,711.45 : x
  2. Step 2: Convert to fraction form
    315,950.77/436,012.14 = 172,711.45/x
  3. Step 3: Cross multiply
    315,950.77x = 436,012.14 × 172,711.45
  4. Step 4: Simplify right side
    315,950.77x = 75,304,288,917.00
  5. Step 5: Solve for x
    x = 75,304,288,917.00/315,950.77
  6. Step 6: Final answer
    x = 238,341.84

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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.