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Finding the Fourth Proportional to 427,425.50, 589,789.42 and 243,687.77

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Solution

The fourth proportional to 427,425.50, 589,789.42 and 243,687.77 is: 336,256.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,425.50 : 589,789.42 = 243,687.77 : x
  2. Step 2: Convert to fraction form
    427,425.50/589,789.42 = 243,687.77/x
  3. Step 3: Cross multiply
    427,425.50x = 589,789.42 × 243,687.77
  4. Step 4: Simplify right side
    427,425.50x = 143,724,466,038.18
  5. Step 5: Solve for x
    x = 143,724,466,038.18/427,425.50
  6. Step 6: Final answer
    x = 336,256.18

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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.