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Finding the Fourth Proportional to 427,642.89, 590,213.45 and 243,881.85

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Solution

The fourth proportional to 427,642.89, 590,213.45 and 243,881.85 is: 336,594.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,642.89 : 590,213.45 = 243,881.85 : x
  2. Step 2: Convert to fraction form
    427,642.89/590,213.45 = 243,881.85/x
  3. Step 3: Cross multiply
    427,642.89x = 590,213.45 × 243,881.85
  4. Step 4: Simplify right side
    427,642.89x = 143,942,350,903.89
  5. Step 5: Solve for x
    x = 143,942,350,903.89/427,642.89
  6. Step 6: Final answer
    x = 336,594.75

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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.