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Finding the Fourth Proportional to 331,352.80, 497,288.40 and 153,881.80

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Solution

The fourth proportional to 331,352.80, 497,288.40 and 153,881.80 is: 230,943.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,352.80 : 497,288.40 = 153,881.80 : x
  2. Step 2: Convert to fraction form
    331,352.80/497,288.40 = 153,881.80/x
  3. Step 3: Cross multiply
    331,352.80x = 497,288.40 × 153,881.80
  4. Step 4: Simplify right side
    331,352.80x = 76,523,634,111.12
  5. Step 5: Solve for x
    x = 76,523,634,111.12/331,352.80
  6. Step 6: Final answer
    x = 230,943.07

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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.