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Finding the Fourth Proportional to 378,021.70, 567,032.55 and 228,430.90

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Solution

The fourth proportional to 378,021.70, 567,032.55 and 228,430.90 is: 342,646.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,021.70 : 567,032.55 = 228,430.90 : x
  2. Step 2: Convert to fraction form
    378,021.70/567,032.55 = 228,430.90/x
  3. Step 3: Cross multiply
    378,021.70x = 567,032.55 × 228,430.90
  4. Step 4: Simplify right side
    378,021.70x = 129,527,755,725.80
  5. Step 5: Solve for x
    x = 129,527,755,725.80/378,021.70
  6. Step 6: Final answer
    x = 342,646.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.