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Finding the Fourth Proportional to 402,779.73, 555,699.97 and 228,331.22

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Solution

The fourth proportional to 402,779.73, 555,699.97 and 228,331.22 is: 315,019.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,779.73 : 555,699.97 = 228,331.22 : x
  2. Step 2: Convert to fraction form
    402,779.73/555,699.97 = 228,331.22/x
  3. Step 3: Cross multiply
    402,779.73x = 555,699.97 × 228,331.22
  4. Step 4: Simplify right side
    402,779.73x = 126,883,651,694.85
  5. Step 5: Solve for x
    x = 126,883,651,694.85/402,779.73
  6. Step 6: Final answer
    x = 315,019.95

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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.