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Finding the Fourth Proportional to 612,069.80, 918,104.70 and 162,789.80

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Solution

The fourth proportional to 612,069.80, 918,104.70 and 162,789.80 is: 244,184.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,069.80 : 918,104.70 = 162,789.80 : x
  2. Step 2: Convert to fraction form
    612,069.80/918,104.70 = 162,789.80/x
  3. Step 3: Cross multiply
    612,069.80x = 918,104.70 × 162,789.80
  4. Step 4: Simplify right side
    612,069.80x = 149,458,080,492.06
  5. Step 5: Solve for x
    x = 149,458,080,492.06/612,069.80
  6. Step 6: Final answer
    x = 244,184.70

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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.