Home / 421,985.48-633,043.82-141,437.12

Finding the Fourth Proportional to 421,985.48, 633,043.82 and 141,437.12

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Solution

The fourth proportional to 421,985.48, 633,043.82 and 141,437.12 is: 212,177.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,985.48 : 633,043.82 = 141,437.12 : x
  2. Step 2: Convert to fraction form
    421,985.48/633,043.82 = 141,437.12/x
  3. Step 3: Cross multiply
    421,985.48x = 633,043.82 × 141,437.12
  4. Step 4: Simplify right side
    421,985.48x = 89,535,891,922.97
  5. Step 5: Solve for x
    x = 89,535,891,922.97/421,985.48
  6. Step 6: Final answer
    x = 212,177.66

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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.