Home / 438,158.10-657,318.34-138,714.06

Finding the Fourth Proportional to 438,158.10, 657,318.34 and 138,714.06

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Solution

The fourth proportional to 438,158.10, 657,318.34 and 138,714.06 is: 208,096.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,158.10 : 657,318.34 = 138,714.06 : x
  2. Step 2: Convert to fraction form
    438,158.10/657,318.34 = 138,714.06/x
  3. Step 3: Cross multiply
    438,158.10x = 657,318.34 × 138,714.06
  4. Step 4: Simplify right side
    438,158.10x = 91,179,295,653.86
  5. Step 5: Solve for x
    x = 91,179,295,653.86/438,158.10
  6. Step 6: Final answer
    x = 208,096.79

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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.