Home / 430,139.85-643,948.07-301,610.48

Finding the Fourth Proportional to 430,139.85, 643,948.07 and 301,610.48

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Solution

The fourth proportional to 430,139.85, 643,948.07 and 301,610.48 is: 451,531.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,139.85 : 643,948.07 = 301,610.48 : x
  2. Step 2: Convert to fraction form
    430,139.85/643,948.07 = 301,610.48/x
  3. Step 3: Cross multiply
    430,139.85x = 643,948.07 × 301,610.48
  4. Step 4: Simplify right side
    430,139.85x = 194,221,481,759.98
  5. Step 5: Solve for x
    x = 194,221,481,759.98/430,139.85
  6. Step 6: Final answer
    x = 451,531.01

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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.