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Finding the Fourth Proportional to 288,015.70, 432,023.55 and 130,249.30

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Solution

The fourth proportional to 288,015.70, 432,023.55 and 130,249.30 is: 195,373.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,015.70 : 432,023.55 = 130,249.30 : x
  2. Step 2: Convert to fraction form
    288,015.70/432,023.55 = 130,249.30/x
  3. Step 3: Cross multiply
    288,015.70x = 432,023.55 × 130,249.30
  4. Step 4: Simplify right side
    288,015.70x = 56,270,764,971.02
  5. Step 5: Solve for x
    x = 56,270,764,971.02/288,015.70
  6. Step 6: Final answer
    x = 195,373.95

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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.