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Finding the Fourth Proportional to 297,029.60, 445,544.40 and 86,688.80

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Solution

The fourth proportional to 297,029.60, 445,544.40 and 86,688.80 is: 130,033.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    297,029.60 : 445,544.40 = 86,688.80 : x
  2. Step 2: Convert to fraction form
    297,029.60/445,544.40 = 86,688.80/x
  3. Step 3: Cross multiply
    297,029.60x = 445,544.40 × 86,688.80
  4. Step 4: Simplify right side
    297,029.60x = 38,623,709,382.72
  5. Step 5: Solve for x
    x = 38,623,709,382.72/297,029.60
  6. Step 6: Final answer
    x = 130,033.20

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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.