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Finding the Fourth Proportional to 255,881.49, 383,443.15 and 103,893.74

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Solution

The fourth proportional to 255,881.49, 383,443.15 and 103,893.74 is: 155,686.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,881.49 : 383,443.15 = 103,893.74 : x
  2. Step 2: Convert to fraction form
    255,881.49/383,443.15 = 103,893.74/x
  3. Step 3: Cross multiply
    255,881.49x = 383,443.15 × 103,893.74
  4. Step 4: Simplify right side
    255,881.49x = 39,837,344,019.36
  5. Step 5: Solve for x
    x = 39,837,344,019.36/255,881.49
  6. Step 6: Final answer
    x = 155,686.70

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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.