Home / 429,055.17-643,610.09-144,774.33

Finding the Fourth Proportional to 429,055.17, 643,610.09 and 144,774.33

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Solution

The fourth proportional to 429,055.17, 643,610.09 and 144,774.33 is: 217,170.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,055.17 : 643,610.09 = 144,774.33 : x
  2. Step 2: Convert to fraction form
    429,055.17/643,610.09 = 144,774.33/x
  3. Step 3: Cross multiply
    429,055.17x = 643,610.09 × 144,774.33
  4. Step 4: Simplify right side
    429,055.17x = 93,178,219,560.99
  5. Step 5: Solve for x
    x = 93,178,219,560.99/429,055.17
  6. Step 6: Final answer
    x = 217,170.72

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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.