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Finding the Fourth Proportional to 289,975.75, 400,165.71 and 160,933.72

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Solution

The fourth proportional to 289,975.75, 400,165.71 and 160,933.72 is: 222,088.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,975.75 : 400,165.71 = 160,933.72 : x
  2. Step 2: Convert to fraction form
    289,975.75/400,165.71 = 160,933.72/x
  3. Step 3: Cross multiply
    289,975.75x = 400,165.71 × 160,933.72
  4. Step 4: Simplify right side
    289,975.75x = 64,400,156,326.74
  5. Step 5: Solve for x
    x = 64,400,156,326.74/289,975.75
  6. Step 6: Final answer
    x = 222,088.08

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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.