Home / 238,400.66-328,996.40-129,507.03

Finding the Fourth Proportional to 238,400.66, 328,996.40 and 129,507.03

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Solution

The fourth proportional to 238,400.66, 328,996.40 and 129,507.03 is: 178,721.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,400.66 : 328,996.40 = 129,507.03 : x
  2. Step 2: Convert to fraction form
    238,400.66/328,996.40 = 129,507.03/x
  3. Step 3: Cross multiply
    238,400.66x = 328,996.40 × 129,507.03
  4. Step 4: Simplify right side
    238,400.66x = 42,607,345,997.16
  5. Step 5: Solve for x
    x = 42,607,345,997.16/238,400.66
  6. Step 6: Final answer
    x = 178,721.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.