Home / 208,867.24-288,386.52-128,402.64

Finding the Fourth Proportional to 208,867.24, 288,386.52 and 128,402.64

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Solution

The fourth proportional to 208,867.24, 288,386.52 and 128,402.64 is: 177,287.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,867.24 : 288,386.52 = 128,402.64 : x
  2. Step 2: Convert to fraction form
    208,867.24/288,386.52 = 128,402.64/x
  3. Step 3: Cross multiply
    208,867.24x = 288,386.52 × 128,402.64
  4. Step 4: Simplify right side
    208,867.24x = 37,029,590,508.41
  5. Step 5: Solve for x
    x = 37,029,590,508.41/208,867.24
  6. Step 6: Final answer
    x = 177,287.69

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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.