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Finding the Fourth Proportional to 296,435.40, 444,710.70 and 86,080.20

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Solution

The fourth proportional to 296,435.40, 444,710.70 and 86,080.20 is: 129,137.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    296,435.40 : 444,710.70 = 86,080.20 : x
  2. Step 2: Convert to fraction form
    296,435.40/444,710.70 = 86,080.20/x
  3. Step 3: Cross multiply
    296,435.40x = 444,710.70 × 86,080.20
  4. Step 4: Simplify right side
    296,435.40x = 38,280,785,998.14
  5. Step 5: Solve for x
    x = 38,280,785,998.14/296,435.40
  6. Step 6: Final answer
    x = 129,137.03

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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.