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Finding the Fourth Proportional to 255,981.04, 384,017.14 and 87,520.10

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Solution

The fourth proportional to 255,981.04, 384,017.14 and 87,520.10 is: 131,295.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    255,981.04 : 384,017.14 = 87,520.10 : x
  2. Step 2: Convert to fraction form
    255,981.04/384,017.14 = 87,520.10/x
  3. Step 3: Cross multiply
    255,981.04x = 384,017.14 × 87,520.10
  4. Step 4: Simplify right side
    255,981.04x = 33,609,218,494.51
  5. Step 5: Solve for x
    x = 33,609,218,494.51/255,981.04
  6. Step 6: Final answer
    x = 131,295.73

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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.