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Finding the Fourth Proportional to 462,939, 638,859.66 and 250,971

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Solution

The fourth proportional to 462,939, 638,859.66 and 250,971 is: 346,342.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    462,939 : 638,859.66 = 250,971 : x
  2. Step 2: Convert to fraction form
    462,939/638,859.66 = 250,971/x
  3. Step 3: Cross multiply
    462,939x = 638,859.66 × 250,971
  4. Step 4: Simplify right side
    462,939x = 160,335,247,729.86
  5. Step 5: Solve for x
    x = 160,335,247,729.86/462,939
  6. Step 6: Final answer
    x = 346,342.06

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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.