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Finding the Fourth Proportional to 318,099.46, 438,966.12 and 174,858.48

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Solution

The fourth proportional to 318,099.46, 438,966.12 and 174,858.48 is: 241,298.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,099.46 : 438,966.12 = 174,858.48 : x
  2. Step 2: Convert to fraction form
    318,099.46/438,966.12 = 174,858.48/x
  3. Step 3: Cross multiply
    318,099.46x = 438,966.12 × 174,858.48
  4. Step 4: Simplify right side
    318,099.46x = 76,756,946,319.87
  5. Step 5: Solve for x
    x = 76,756,946,319.87/318,099.46
  6. Step 6: Final answer
    x = 241,298.57

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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.