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Finding the Fourth Proportional to 400,525.80, 600,712.20 and 120,043.02

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Solution

The fourth proportional to 400,525.80, 600,712.20 and 120,043.02 is: 180,041.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,525.80 : 600,712.20 = 120,043.02 : x
  2. Step 2: Convert to fraction form
    400,525.80/600,712.20 = 120,043.02/x
  3. Step 3: Cross multiply
    400,525.80x = 600,712.20 × 120,043.02
  4. Step 4: Simplify right side
    400,525.80x = 72,111,306,638.84
  5. Step 5: Solve for x
    x = 72,111,306,638.84/400,525.80
  6. Step 6: Final answer
    x = 180,041.60

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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.