Home / 429,013.60-643,730.32-172,835.52

Finding the Fourth Proportional to 429,013.60, 643,730.32 and 172,835.52

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Solution

The fourth proportional to 429,013.60, 643,730.32 and 172,835.52 is: 259,337.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,013.60 : 643,730.32 = 172,835.52 : x
  2. Step 2: Convert to fraction form
    429,013.60/643,730.32 = 172,835.52/x
  3. Step 3: Cross multiply
    429,013.60x = 643,730.32 × 172,835.52
  4. Step 4: Simplify right side
    429,013.60x = 111,259,464,596.97
  5. Step 5: Solve for x
    x = 111,259,464,596.97/429,013.60
  6. Step 6: Final answer
    x = 259,337.85

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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.