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Finding the Fourth Proportional to 621,781.29, 931,782.02 and 266,700.33

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Solution

The fourth proportional to 621,781.29, 931,782.02 and 266,700.33 is: 399,668.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,781.29 : 931,782.02 = 266,700.33 : x
  2. Step 2: Convert to fraction form
    621,781.29/931,782.02 = 266,700.33/x
  3. Step 3: Cross multiply
    621,781.29x = 931,782.02 × 266,700.33
  4. Step 4: Simplify right side
    621,781.29x = 248,506,570,888.57
  5. Step 5: Solve for x
    x = 248,506,570,888.57/621,781.29
  6. Step 6: Final answer
    x = 399,668.78

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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.