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Finding the Fourth Proportional to 255,648.72, 352,797.62 and 140,931.77

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Solution

The fourth proportional to 255,648.72, 352,797.62 and 140,931.77 is: 194,487.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,648.72 : 352,797.62 = 140,931.77 : x
  2. Step 2: Convert to fraction form
    255,648.72/352,797.62 = 140,931.77/x
  3. Step 3: Cross multiply
    255,648.72x = 352,797.62 × 140,931.77
  4. Step 4: Simplify right side
    255,648.72x = 49,720,390,569.74
  5. Step 5: Solve for x
    x = 49,720,390,569.74/255,648.72
  6. Step 6: Final answer
    x = 194,487.15

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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.