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Finding the Fourth Proportional to 297,670.20, 446,505.30 and 87,329.40

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Solution

The fourth proportional to 297,670.20, 446,505.30 and 87,329.40 is: 130,994.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    297,670.20 : 446,505.30 = 87,329.40 : x
  2. Step 2: Convert to fraction form
    297,670.20/446,505.30 = 87,329.40/x
  3. Step 3: Cross multiply
    297,670.20x = 446,505.30 × 87,329.40
  4. Step 4: Simplify right side
    297,670.20x = 38,993,039,945.82
  5. Step 5: Solve for x
    x = 38,993,039,945.82/297,670.20
  6. Step 6: Final answer
    x = 130,994.10

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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.