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Finding the Fourth Proportional to 380,518.56, 570,663.93 and 238,579.53

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Solution

The fourth proportional to 380,518.56, 570,663.93 and 238,579.53 is: 357,797.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,518.56 : 570,663.93 = 238,579.53 : x
  2. Step 2: Convert to fraction form
    380,518.56/570,663.93 = 238,579.53/x
  3. Step 3: Cross multiply
    380,518.56x = 570,663.93 × 238,579.53
  4. Step 4: Simplify right side
    380,518.56x = 136,148,730,962.04
  5. Step 5: Solve for x
    x = 136,148,730,962.04/380,518.56
  6. Step 6: Final answer
    x = 357,797.87

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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.