Home / 427,864.07-641,810.99-203,108.72

Finding the Fourth Proportional to 427,864.07, 641,810.99 and 203,108.72

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Solution

The fourth proportional to 427,864.07, 641,810.99 and 203,108.72 is: 304,670.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,864.07 : 641,810.99 = 203,108.72 : x
  2. Step 2: Convert to fraction form
    427,864.07/641,810.99 = 203,108.72/x
  3. Step 3: Cross multiply
    427,864.07x = 641,810.99 × 203,108.72
  4. Step 4: Simplify right side
    427,864.07x = 130,357,405,959.55
  5. Step 5: Solve for x
    x = 130,357,405,959.55/427,864.07
  6. Step 6: Final answer
    x = 304,670.14

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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.