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Finding the Fourth Proportional to 199,590.92, 299,479.77 and 87,256.58

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Solution

The fourth proportional to 199,590.92, 299,479.77 and 87,256.58 is: 130,925.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,590.92 : 299,479.77 = 87,256.58 : x
  2. Step 2: Convert to fraction form
    199,590.92/299,479.77 = 87,256.58/x
  3. Step 3: Cross multiply
    199,590.92x = 299,479.77 × 87,256.58
  4. Step 4: Simplify right side
    199,590.92x = 26,131,580,509.39
  5. Step 5: Solve for x
    x = 26,131,580,509.39/199,590.92
  6. Step 6: Final answer
    x = 130,925.70

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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.