Home / 438,003.05-657,004.58-272,115.05

Finding the Fourth Proportional to 438,003.05, 657,004.58 and 272,115.05

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Solution

The fourth proportional to 438,003.05, 657,004.58 and 272,115.05 is: 408,172.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,003.05 : 657,004.58 = 272,115.05 : x
  2. Step 2: Convert to fraction form
    438,003.05/657,004.58 = 272,115.05/x
  3. Step 3: Cross multiply
    438,003.05x = 657,004.58 × 272,115.05
  4. Step 4: Simplify right side
    438,003.05x = 178,780,832,776.35
  5. Step 5: Solve for x
    x = 178,780,832,776.35/438,003.05
  6. Step 6: Final answer
    x = 408,172.58

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1.5x scale

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.