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Finding the Fourth Proportional to 289,366.97, 399,315.22 and 162,036.05

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Solution

The fourth proportional to 289,366.97, 399,315.22 and 162,036.05 is: 223,603.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,366.97 : 399,315.22 = 162,036.05 : x
  2. Step 2: Convert to fraction form
    289,366.97/399,315.22 = 162,036.05/x
  3. Step 3: Cross multiply
    289,366.97x = 399,315.22 × 162,036.05
  4. Step 4: Simplify right side
    289,366.97x = 64,703,458,552.01
  5. Step 5: Solve for x
    x = 64,703,458,552.01/289,366.97
  6. Step 6: Final answer
    x = 223,603.47

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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.