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Finding the Fourth Proportional to 378,011.47, 567,127.95 and 111,778.90

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Solution

The fourth proportional to 378,011.47, 567,127.95 and 111,778.90 is: 167,701.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,011.47 : 567,127.95 = 111,778.90 : x
  2. Step 2: Convert to fraction form
    378,011.47/567,127.95 = 111,778.90/x
  3. Step 3: Cross multiply
    378,011.47x = 567,127.95 × 111,778.90
  4. Step 4: Simplify right side
    378,011.47x = 63,392,938,410.26
  5. Step 5: Solve for x
    x = 63,392,938,410.26/378,011.47
  6. Step 6: Final answer
    x = 167,701.10

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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.