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Finding the Fourth Proportional to 288,766.20, 433,141.20 and 130,994.40

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Solution

The fourth proportional to 288,766.20, 433,141.20 and 130,994.40 is: 196,487.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,766.20 : 433,141.20 = 130,994.40 : x
  2. Step 2: Convert to fraction form
    288,766.20/433,141.20 = 130,994.40/x
  3. Step 3: Cross multiply
    288,766.20x = 433,141.20 × 130,994.40
  4. Step 4: Simplify right side
    288,766.20x = 56,739,071,609.28
  5. Step 5: Solve for x
    x = 56,739,071,609.28/288,766.20
  6. Step 6: Final answer
    x = 196,487.93

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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.