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Finding the Fourth Proportional to 474,660.69, 655,029.36 and 256,869.20

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Solution

The fourth proportional to 474,660.69, 655,029.36 and 256,869.20 is: 354,478.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    474,660.69 : 655,029.36 = 256,869.20 : x
  2. Step 2: Convert to fraction form
    474,660.69/655,029.36 = 256,869.20/x
  3. Step 3: Cross multiply
    474,660.69x = 655,029.36 × 256,869.20
  4. Step 4: Simplify right side
    474,660.69x = 168,256,869,317.29
  5. Step 5: Solve for x
    x = 168,256,869,317.29/474,660.69
  6. Step 6: Final answer
    x = 354,478.21

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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.