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Finding the Fourth Proportional to 165,089.80, 247,634.70 and 40,430.80

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Solution

The fourth proportional to 165,089.80, 247,634.70 and 40,430.80 is: 60,646.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,089.80 : 247,634.70 = 40,430.80 : x
  2. Step 2: Convert to fraction form
    165,089.80/247,634.70 = 40,430.80/x
  3. Step 3: Cross multiply
    165,089.80x = 247,634.70 × 40,430.80
  4. Step 4: Simplify right side
    165,089.80x = 10,012,069,028.76
  5. Step 5: Solve for x
    x = 10,012,069,028.76/165,089.80
  6. Step 6: Final answer
    x = 60,646.20

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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.