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Finding the Fourth Proportional to 371,073.66, 512,081.72 and 209,925.38

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Solution

The fourth proportional to 371,073.66, 512,081.72 and 209,925.38 is: 289,697.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,073.66 : 512,081.72 = 209,925.38 : x
  2. Step 2: Convert to fraction form
    371,073.66/512,081.72 = 209,925.38/x
  3. Step 3: Cross multiply
    371,073.66x = 512,081.72 × 209,925.38
  4. Step 4: Simplify right side
    371,073.66x = 107,498,949,662.05
  5. Step 5: Solve for x
    x = 107,498,949,662.05/371,073.66
  6. Step 6: Final answer
    x = 289,697.06

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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.