Home / 231,409.39-319,340.73-130,807.39

Finding the Fourth Proportional to 231,409.39, 319,340.73 and 130,807.39

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Solution

The fourth proportional to 231,409.39, 319,340.73 and 130,807.39 is: 180,511.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,409.39 : 319,340.73 = 130,807.39 : x
  2. Step 2: Convert to fraction form
    231,409.39/319,340.73 = 130,807.39/x
  3. Step 3: Cross multiply
    231,409.39x = 319,340.73 × 130,807.39
  4. Step 4: Simplify right side
    231,409.39x = 41,772,127,411.99
  5. Step 5: Solve for x
    x = 41,772,127,411.99/231,409.39
  6. Step 6: Final answer
    x = 180,511.81

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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.