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Finding the Fourth Proportional to 429,060.52, 643,341.57 and 162,675.72

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Solution

The fourth proportional to 429,060.52, 643,341.57 and 162,675.72 is: 243,919.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,060.52 : 643,341.57 = 162,675.72 : x
  2. Step 2: Convert to fraction form
    429,060.52/643,341.57 = 162,675.72/x
  3. Step 3: Cross multiply
    429,060.52x = 643,341.57 × 162,675.72
  4. Step 4: Simplify right side
    429,060.52x = 104,656,052,495.65
  5. Step 5: Solve for x
    x = 104,656,052,495.65/429,060.52
  6. Step 6: Final answer
    x = 243,919.09

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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.