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Finding the Fourth Proportional to 318,399.29, 439,394.66 and 182,430.51

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Solution

The fourth proportional to 318,399.29, 439,394.66 and 182,430.51 is: 251,756.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,399.29 : 439,394.66 = 182,430.51 : x
  2. Step 2: Convert to fraction form
    318,399.29/439,394.66 = 182,430.51/x
  3. Step 3: Cross multiply
    318,399.29x = 439,394.66 × 182,430.51
  4. Step 4: Simplify right side
    318,399.29x = 80,158,991,915.08
  5. Step 5: Solve for x
    x = 80,158,991,915.08/318,399.29
  6. Step 6: Final answer
    x = 251,756.19

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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.