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Finding the Fourth Proportional to 555,315.48, 766,335.42 and 300,666.60

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Solution

The fourth proportional to 555,315.48, 766,335.42 and 300,666.60 is: 414,919.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,315.48 : 766,335.42 = 300,666.60 : x
  2. Step 2: Convert to fraction form
    555,315.48/766,335.42 = 300,666.60/x
  3. Step 3: Cross multiply
    555,315.48x = 766,335.42 × 300,666.60
  4. Step 4: Simplify right side
    555,315.48x = 230,411,465,190.97
  5. Step 5: Solve for x
    x = 230,411,465,190.97/555,315.48
  6. Step 6: Final answer
    x = 414,919.94

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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.