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Finding the Fourth Proportional to 220,066.70, 330,209.40 and 86,951.30

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Solution

The fourth proportional to 220,066.70, 330,209.40 and 86,951.30 is: 130,470.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,066.70 : 330,209.40 = 86,951.30 : x
  2. Step 2: Convert to fraction form
    220,066.70/330,209.40 = 86,951.30/x
  3. Step 3: Cross multiply
    220,066.70x = 330,209.40 × 86,951.30
  4. Step 4: Simplify right side
    220,066.70x = 28,712,136,602.22
  5. Step 5: Solve for x
    x = 28,712,136,602.22/220,066.70
  6. Step 6: Final answer
    x = 130,470.16

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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.