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Finding the Fourth Proportional to 474,960.45, 655,440.49 and 257,165.39

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Solution

The fourth proportional to 474,960.45, 655,440.49 and 257,165.39 is: 354,885.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    474,960.45 : 655,440.49 = 257,165.39 : x
  2. Step 2: Convert to fraction form
    474,960.45/655,440.49 = 257,165.39/x
  3. Step 3: Cross multiply
    474,960.45x = 655,440.49 × 257,165.39
  4. Step 4: Simplify right side
    474,960.45x = 168,556,609,232.64
  5. Step 5: Solve for x
    x = 168,556,609,232.64/474,960.45
  6. Step 6: Final answer
    x = 354,885.57

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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.