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Finding the Fourth Proportional to 343,455.60, 515,230.30 and 118,755.70

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Solution

The fourth proportional to 343,455.60, 515,230.30 and 118,755.70 is: 178,149.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,455.60 : 515,230.30 = 118,755.70 : x
  2. Step 2: Convert to fraction form
    343,455.60/515,230.30 = 118,755.70/x
  3. Step 3: Cross multiply
    343,455.60x = 515,230.30 × 118,755.70
  4. Step 4: Simplify right side
    343,455.60x = 61,186,534,937.71
  5. Step 5: Solve for x
    x = 61,186,534,937.71/343,455.60
  6. Step 6: Final answer
    x = 178,149.77

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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.