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Finding the Fourth Proportional to 318,065.76, 438,922.08 and 174,825.84

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Solution

The fourth proportional to 318,065.76, 438,922.08 and 174,825.84 is: 241,254.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,065.76 : 438,922.08 = 174,825.84 : x
  2. Step 2: Convert to fraction form
    318,065.76/438,922.08 = 174,825.84/x
  3. Step 3: Cross multiply
    318,065.76x = 438,922.08 × 174,825.84
  4. Step 4: Simplify right side
    318,065.76x = 76,734,921,330.55
  5. Step 5: Solve for x
    x = 76,734,921,330.55/318,065.76
  6. Step 6: Final answer
    x = 241,254.89

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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.