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Finding the Fourth Proportional to 447,681.63, 617,788.89 and 243,728.08

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Solution

The fourth proportional to 447,681.63, 617,788.89 and 243,728.08 is: 336,338.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,681.63 : 617,788.89 = 243,728.08 : x
  2. Step 2: Convert to fraction form
    447,681.63/617,788.89 = 243,728.08/x
  3. Step 3: Cross multiply
    447,681.63x = 617,788.89 × 243,728.08
  4. Step 4: Simplify right side
    447,681.63x = 150,572,498,518.29
  5. Step 5: Solve for x
    x = 150,572,498,518.29/447,681.63
  6. Step 6: Final answer
    x = 336,338.34

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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.