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Finding the Fourth Proportional to 508,376.18, 701,559.78 and 282,021.68

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Solution

The fourth proportional to 508,376.18, 701,559.78 and 282,021.68 is: 389,190.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,376.18 : 701,559.78 = 282,021.68 : x
  2. Step 2: Convert to fraction form
    508,376.18/701,559.78 = 282,021.68/x
  3. Step 3: Cross multiply
    508,376.18x = 701,559.78 × 282,021.68
  4. Step 4: Simplify right side
    508,376.18x = 197,855,067,776.03
  5. Step 5: Solve for x
    x = 197,855,067,776.03/508,376.18
  6. Step 6: Final answer
    x = 389,190.28

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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.