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Finding the Fourth Proportional to 402,117.82, 554,615.10 and 273,155.73

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Solution

The fourth proportional to 402,117.82, 554,615.10 and 273,155.73 is: 376,746.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,117.82 : 554,615.10 = 273,155.73 : x
  2. Step 2: Convert to fraction form
    402,117.82/554,615.10 = 273,155.73/x
  3. Step 3: Cross multiply
    402,117.82x = 554,615.10 × 273,155.73
  4. Step 4: Simplify right side
    402,117.82x = 151,496,290,429.72
  5. Step 5: Solve for x
    x = 151,496,290,429.72/402,117.82
  6. Step 6: Final answer
    x = 376,746.03

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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.