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Finding the Fourth Proportional to 371,424.88, 511,418.66 and 290,081.71

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Solution

The fourth proportional to 371,424.88, 511,418.66 and 290,081.71 is: 399,416.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,424.88 : 511,418.66 = 290,081.71 : x
  2. Step 2: Convert to fraction form
    371,424.88/511,418.66 = 290,081.71/x
  3. Step 3: Cross multiply
    371,424.88x = 511,418.66 × 290,081.71
  4. Step 4: Simplify right side
    371,424.88x = 148,353,199,418.71
  5. Step 5: Solve for x
    x = 148,353,199,418.71/371,424.88
  6. Step 6: Final answer
    x = 399,416.43

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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.