Home / 427,787.16-642,311.54-238,617.12

Finding the Fourth Proportional to 427,787.16, 642,311.54 and 238,617.12

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Solution

The fourth proportional to 427,787.16, 642,311.54 and 238,617.12 is: 358,277.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,787.16 : 642,311.54 = 238,617.12 : x
  2. Step 2: Convert to fraction form
    427,787.16/642,311.54 = 238,617.12/x
  3. Step 3: Cross multiply
    427,787.16x = 642,311.54 × 238,617.12
  4. Step 4: Simplify right side
    427,787.16x = 153,266,531,927.96
  5. Step 5: Solve for x
    x = 153,266,531,927.96/427,787.16
  6. Step 6: Final answer
    x = 358,277.54

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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.