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Finding the Fourth Proportional to 378,478.47, 567,075.03 and 228,403.41

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Solution

The fourth proportional to 378,478.47, 567,075.03 and 228,403.41 is: 342,217.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,478.47 : 567,075.03 = 228,403.41 : x
  2. Step 2: Convert to fraction form
    378,478.47/567,075.03 = 228,403.41/x
  3. Step 3: Cross multiply
    378,478.47x = 567,075.03 × 228,403.41
  4. Step 4: Simplify right side
    378,478.47x = 129,521,870,577.85
  5. Step 5: Solve for x
    x = 129,521,870,577.85/378,478.47
  6. Step 6: Final answer
    x = 342,217.27

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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.