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Finding the Fourth Proportional to 555,105.69, 766,064.42 and 340,204.23

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Solution

The fourth proportional to 555,105.69, 766,064.42 and 340,204.23 is: 469,493.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,105.69 : 766,064.42 = 340,204.23 : x
  2. Step 2: Convert to fraction form
    555,105.69/766,064.42 = 340,204.23/x
  3. Step 3: Cross multiply
    555,105.69x = 766,064.42 × 340,204.23
  4. Step 4: Simplify right side
    555,105.69x = 260,618,356,136.50
  5. Step 5: Solve for x
    x = 260,618,356,136.50/555,105.69
  6. Step 6: Final answer
    x = 469,493.22

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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.