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Finding the Fourth Proportional to 338,570.40, 507,889.28 and 125,395.36

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Solution

The fourth proportional to 338,570.40, 507,889.28 and 125,395.36 is: 188,105.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,570.40 : 507,889.28 = 125,395.36 : x
  2. Step 2: Convert to fraction form
    338,570.40/507,889.28 = 125,395.36/x
  3. Step 3: Cross multiply
    338,570.40x = 507,889.28 × 125,395.36
  4. Step 4: Simplify right side
    338,570.40x = 63,686,959,105.74
  5. Step 5: Solve for x
    x = 63,686,959,105.74/338,570.40
  6. Step 6: Final answer
    x = 188,105.51

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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.