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Finding the Fourth Proportional to 401,161.32, 553,854.33 and 258,169.86

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Solution

The fourth proportional to 401,161.32, 553,854.33 and 258,169.86 is: 356,436.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,161.32 : 553,854.33 = 258,169.86 : x
  2. Step 2: Convert to fraction form
    401,161.32/553,854.33 = 258,169.86/x
  3. Step 3: Cross multiply
    401,161.32x = 553,854.33 × 258,169.86
  4. Step 4: Simplify right side
    401,161.32x = 142,988,494,836.49
  5. Step 5: Solve for x
    x = 142,988,494,836.49/401,161.32
  6. Step 6: Final answer
    x = 356,436.40

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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.