Home / 438,056.44-657,165.68-138,612.40

Finding the Fourth Proportional to 438,056.44, 657,165.68 and 138,612.40

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Solution

The fourth proportional to 438,056.44, 657,165.68 and 138,612.40 is: 207,944.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,056.44 : 657,165.68 = 138,612.40 : x
  2. Step 2: Convert to fraction form
    438,056.44/657,165.68 = 138,612.40/x
  3. Step 3: Cross multiply
    438,056.44x = 657,165.68 × 138,612.40
  4. Step 4: Simplify right side
    438,056.44x = 91,091,312,102.43
  5. Step 5: Solve for x
    x = 91,091,312,102.43/438,056.44
  6. Step 6: Final answer
    x = 207,944.24

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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.