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Finding the Fourth Proportional to 307,817.40, 461,630.10 and 120,886.20

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Solution

The fourth proportional to 307,817.40, 461,630.10 and 120,886.20 is: 181,291.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,817.40 : 461,630.10 = 120,886.20 : x
  2. Step 2: Convert to fraction form
    307,817.40/461,630.10 = 120,886.20/x
  3. Step 3: Cross multiply
    307,817.40x = 461,630.10 × 120,886.20
  4. Step 4: Simplify right side
    307,817.40x = 55,804,708,594.62
  5. Step 5: Solve for x
    x = 55,804,708,594.62/307,817.40
  6. Step 6: Final answer
    x = 181,291.60

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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.