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Finding the Fourth Proportional to 155,536.80, 232,867.80 and 139,790.40

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Solution

The fourth proportional to 155,536.80, 232,867.80 and 139,790.40 is: 209,292.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,536.80 : 232,867.80 = 139,790.40 : x
  2. Step 2: Convert to fraction form
    155,536.80/232,867.80 = 139,790.40/x
  3. Step 3: Cross multiply
    155,536.80x = 232,867.80 × 139,790.40
  4. Step 4: Simplify right side
    155,536.80x = 32,552,682,909.12
  5. Step 5: Solve for x
    x = 32,552,682,909.12/155,536.80
  6. Step 6: Final answer
    x = 209,292.48

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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.