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Finding the Fourth Proportional to 309,952.24, 427,720.08 and 189,074.32

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Solution

The fourth proportional to 309,952.24, 427,720.08 and 189,074.32 is: 260,914.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,952.24 : 427,720.08 = 189,074.32 : x
  2. Step 2: Convert to fraction form
    309,952.24/427,720.08 = 189,074.32/x
  3. Step 3: Cross multiply
    309,952.24x = 427,720.08 × 189,074.32
  4. Step 4: Simplify right side
    309,952.24x = 80,870,883,276.35
  5. Step 5: Solve for x
    x = 80,870,883,276.35/309,952.24
  6. Step 6: Final answer
    x = 260,914.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.