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Finding the Fourth Proportional to 265,502.93, 398,106.76 and 87,913.07

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Solution

The fourth proportional to 265,502.93, 398,106.76 and 87,913.07 is: 131,820.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,502.93 : 398,106.76 = 87,913.07 : x
  2. Step 2: Convert to fraction form
    265,502.93/398,106.76 = 87,913.07/x
  3. Step 3: Cross multiply
    265,502.93x = 398,106.76 × 87,913.07
  4. Step 4: Simplify right side
    265,502.93x = 34,998,785,249.04
  5. Step 5: Solve for x
    x = 34,998,785,249.04/265,502.93
  6. Step 6: Final answer
    x = 131,820.71

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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.