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Finding the Fourth Proportional to 447,421.52, 617,433.72 and 243,465.50

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Solution

The fourth proportional to 447,421.52, 617,433.72 and 243,465.50 is: 335,978.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,421.52 : 617,433.72 = 243,465.50 : x
  2. Step 2: Convert to fraction form
    447,421.52/617,433.72 = 243,465.50/x
  3. Step 3: Cross multiply
    447,421.52x = 617,433.72 × 243,465.50
  4. Step 4: Simplify right side
    447,421.52x = 150,323,809,356.66
  5. Step 5: Solve for x
    x = 150,323,809,356.66/447,421.52
  6. Step 6: Final answer
    x = 335,978.05

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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.