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Finding the Fourth Proportional to 203,466.13, 305,199.20 and 78,807.13

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Solution

The fourth proportional to 203,466.13, 305,199.20 and 78,807.13 is: 118,210.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,466.13 : 305,199.20 = 78,807.13 : x
  2. Step 2: Convert to fraction form
    203,466.13/305,199.20 = 78,807.13/x
  3. Step 3: Cross multiply
    203,466.13x = 305,199.20 × 78,807.13
  4. Step 4: Simplify right side
    203,466.13x = 24,051,873,030.30
  5. Step 5: Solve for x
    x = 24,051,873,030.30/203,466.13
  6. Step 6: Final answer
    x = 118,210.70

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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.