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Finding the Fourth Proportional to 220,172.88, 330,209.64 and 101,779.50

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Solution

The fourth proportional to 220,172.88, 330,209.64 and 101,779.50 is: 152,646.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,172.88 : 330,209.64 = 101,779.50 : x
  2. Step 2: Convert to fraction form
    220,172.88/330,209.64 = 101,779.50/x
  3. Step 3: Cross multiply
    220,172.88x = 330,209.64 × 101,779.50
  4. Step 4: Simplify right side
    220,172.88x = 33,608,572,054.38
  5. Step 5: Solve for x
    x = 33,608,572,054.38/220,172.88
  6. Step 6: Final answer
    x = 152,646.28

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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.