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Finding the Fourth Proportional to 357,415.20, 536,317.20 and 147,074.40

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Solution

The fourth proportional to 357,415.20, 536,317.20 and 147,074.40 is: 220,691.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    357,415.20 : 536,317.20 = 147,074.40 : x
  2. Step 2: Convert to fraction form
    357,415.20/536,317.20 = 147,074.40/x
  3. Step 3: Cross multiply
    357,415.20x = 536,317.20 × 147,074.40
  4. Step 4: Simplify right side
    357,415.20x = 78,878,530,399.68
  5. Step 5: Solve for x
    x = 78,878,530,399.68/357,415.20
  6. Step 6: Final answer
    x = 220,691.59

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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.