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Finding the Fourth Proportional to 378,026.70, 567,040.05 and 141,320.40

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Solution

The fourth proportional to 378,026.70, 567,040.05 and 141,320.40 is: 211,980.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,026.70 : 567,040.05 = 141,320.40 : x
  2. Step 2: Convert to fraction form
    378,026.70/567,040.05 = 141,320.40/x
  3. Step 3: Cross multiply
    378,026.70x = 567,040.05 × 141,320.40
  4. Step 4: Simplify right side
    378,026.70x = 80,134,326,682.02
  5. Step 5: Solve for x
    x = 80,134,326,682.02/378,026.70
  6. Step 6: Final answer
    x = 211,980.60

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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.