Home / 380,821.56-570,531.70-238,640.34

Finding the Fourth Proportional to 380,821.56, 570,531.70 and 238,640.34

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Solution

The fourth proportional to 380,821.56, 570,531.70 and 238,640.34 is: 357,521.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,821.56 : 570,531.70 = 238,640.34 : x
  2. Step 2: Convert to fraction form
    380,821.56/570,531.70 = 238,640.34/x
  3. Step 3: Cross multiply
    380,821.56x = 570,531.70 × 238,640.34
  4. Step 4: Simplify right side
    380,821.56x = 136,151,878,868.78
  5. Step 5: Solve for x
    x = 136,151,878,868.78/380,821.56
  6. Step 6: Final answer
    x = 357,521.46

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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.