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Finding the Fourth Proportional to 318,128.63, 439,020.20 and 174,885.53

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Solution

The fourth proportional to 318,128.63, 439,020.20 and 174,885.53 is: 241,343.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,128.63 : 439,020.20 = 174,885.53 : x
  2. Step 2: Convert to fraction form
    318,128.63/439,020.20 = 174,885.53/x
  3. Step 3: Cross multiply
    318,128.63x = 439,020.20 × 174,885.53
  4. Step 4: Simplify right side
    318,128.63x = 76,778,278,599.82
  5. Step 5: Solve for x
    x = 76,778,278,599.82/318,128.63
  6. Step 6: Final answer
    x = 241,343.51

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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.