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Finding the Fourth Proportional to 251,571.40, 377,346.30 and 85,359.40

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Solution

The fourth proportional to 251,571.40, 377,346.30 and 85,359.40 is: 128,035.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,571.40 : 377,346.30 = 85,359.40 : x
  2. Step 2: Convert to fraction form
    251,571.40/377,346.30 = 85,359.40/x
  3. Step 3: Cross multiply
    251,571.40x = 377,346.30 × 85,359.40
  4. Step 4: Simplify right side
    251,571.40x = 32,210,053,760.22
  5. Step 5: Solve for x
    x = 32,210,053,760.22/251,571.40
  6. Step 6: Final answer
    x = 128,035.44

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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.