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Finding the Fourth Proportional to 555,206.72, 766,187.72 and 300,557.90

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Solution

The fourth proportional to 555,206.72, 766,187.72 and 300,557.90 is: 414,771.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,206.72 : 766,187.72 = 300,557.90 : x
  2. Step 2: Convert to fraction form
    555,206.72/766,187.72 = 300,557.90/x
  3. Step 3: Cross multiply
    555,206.72x = 766,187.72 × 300,557.90
  4. Step 4: Simplify right side
    555,206.72x = 230,283,772,128.99
  5. Step 5: Solve for x
    x = 230,283,772,128.99/555,206.72
  6. Step 6: Final answer
    x = 414,771.23

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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.