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Finding the Fourth Proportional to 478,067.73, 716,934.49 and 141,018.91

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Solution

The fourth proportional to 478,067.73, 716,934.49 and 141,018.91 is: 211,479.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,067.73 : 716,934.49 = 141,018.91 : x
  2. Step 2: Convert to fraction form
    478,067.73/716,934.49 = 141,018.91/x
  3. Step 3: Cross multiply
    478,067.73x = 716,934.49 × 141,018.91
  4. Step 4: Simplify right side
    478,067.73x = 101,101,318,176.32
  5. Step 5: Solve for x
    x = 101,101,318,176.32/478,067.73
  6. Step 6: Final answer
    x = 211,479.07

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.