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Finding the Fourth Proportional to 540,871.40, 811,230.30 and 185,901.80

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Solution

The fourth proportional to 540,871.40, 811,230.30 and 185,901.80 is: 278,826.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    540,871.40 : 811,230.30 = 185,901.80 : x
  2. Step 2: Convert to fraction form
    540,871.40/811,230.30 = 185,901.80/x
  3. Step 3: Cross multiply
    540,871.40x = 811,230.30 × 185,901.80
  4. Step 4: Simplify right side
    540,871.40x = 150,809,172,984.54
  5. Step 5: Solve for x
    x = 150,809,172,984.54/540,871.40
  6. Step 6: Final answer
    x = 278,826.30

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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.