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Finding the Fourth Proportional to 356,990.71, 534,757.06 and 199,303.15

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Solution

The fourth proportional to 356,990.71, 534,757.06 and 199,303.15 is: 298,547.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,990.71 : 534,757.06 = 199,303.15 : x
  2. Step 2: Convert to fraction form
    356,990.71/534,757.06 = 199,303.15/x
  3. Step 3: Cross multiply
    356,990.71x = 534,757.06 × 199,303.15
  4. Step 4: Simplify right side
    356,990.71x = 106,578,766,542.74
  5. Step 5: Solve for x
    x = 106,578,766,542.74/356,990.71
  6. Step 6: Final answer
    x = 298,547.73

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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.