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Finding the Fourth Proportional to 230,720.40, 346,015.80 and 72,997.20

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Solution

The fourth proportional to 230,720.40, 346,015.80 and 72,997.20 is: 109,475.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,720.40 : 346,015.80 = 72,997.20 : x
  2. Step 2: Convert to fraction form
    230,720.40/346,015.80 = 72,997.20/x
  3. Step 3: Cross multiply
    230,720.40x = 346,015.80 × 72,997.20
  4. Step 4: Simplify right side
    230,720.40x = 25,258,184,555.76
  5. Step 5: Solve for x
    x = 25,258,184,555.76/230,720.40
  6. Step 6: Final answer
    x = 109,475.30

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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.