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Finding the Fourth Proportional to 297,674.40, 446,569.20 and 87,319.20

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Solution

The fourth proportional to 297,674.40, 446,569.20 and 87,319.20 is: 130,995.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    297,674.40 : 446,569.20 = 87,319.20 : x
  2. Step 2: Convert to fraction form
    297,674.40/446,569.20 = 87,319.20/x
  3. Step 3: Cross multiply
    297,674.40x = 446,569.20 × 87,319.20
  4. Step 4: Simplify right side
    297,674.40x = 38,994,065,288.64
  5. Step 5: Solve for x
    x = 38,994,065,288.64/297,674.40
  6. Step 6: Final answer
    x = 130,995.70

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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.