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Finding the Fourth Proportional to 220,070.70, 330,215.40 and 86,955.30

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Solution

The fourth proportional to 220,070.70, 330,215.40 and 86,955.30 is: 130,476.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,070.70 : 330,215.40 = 86,955.30 : x
  2. Step 2: Convert to fraction form
    220,070.70/330,215.40 = 86,955.30/x
  3. Step 3: Cross multiply
    220,070.70x = 330,215.40 × 86,955.30
  4. Step 4: Simplify right side
    220,070.70x = 28,713,979,171.62
  5. Step 5: Solve for x
    x = 28,713,979,171.62/220,070.70
  6. Step 6: Final answer
    x = 130,476.16

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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.