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Finding the Fourth Proportional to 447,387.64, 617,402.32 and 243,439.59

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Solution

The fourth proportional to 447,387.64, 617,402.32 and 243,439.59 is: 335,950.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,387.64 : 617,402.32 = 243,439.59 : x
  2. Step 2: Convert to fraction form
    447,387.64/617,402.32 = 243,439.59/x
  3. Step 3: Cross multiply
    447,387.64x = 617,402.32 × 243,439.59
  4. Step 4: Simplify right side
    447,387.64x = 150,300,169,352.51
  5. Step 5: Solve for x
    x = 150,300,169,352.51/447,387.64
  6. Step 6: Final answer
    x = 335,950.65

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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.