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Finding the Fourth Proportional to 420,752.79, 580,688.69 and 236,997.41

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Solution

The fourth proportional to 420,752.79, 580,688.69 and 236,997.41 is: 327,084.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,752.79 : 580,688.69 = 236,997.41 : x
  2. Step 2: Convert to fraction form
    420,752.79/580,688.69 = 236,997.41/x
  3. Step 3: Cross multiply
    420,752.79x = 580,688.69 × 236,997.41
  4. Step 4: Simplify right side
    420,752.79x = 137,621,713,235.34
  5. Step 5: Solve for x
    x = 137,621,713,235.34/420,752.79
  6. Step 6: Final answer
    x = 327,084.49

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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.