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Finding the Fourth Proportional to 424,334.33, 636,805.47 and 154,461.87

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Solution

The fourth proportional to 424,334.33, 636,805.47 and 154,461.87 is: 231,803.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,334.33 : 636,805.47 = 154,461.87 : x
  2. Step 2: Convert to fraction form
    424,334.33/636,805.47 = 154,461.87/x
  3. Step 3: Cross multiply
    424,334.33x = 636,805.47 × 154,461.87
  4. Step 4: Simplify right side
    424,334.33x = 98,362,163,722.43
  5. Step 5: Solve for x
    x = 98,362,163,722.43/424,334.33
  6. Step 6: Final answer
    x = 231,803.46

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.