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Finding the Fourth Proportional to 429,051.67, 643,486.38 and 162,718.81

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Solution

The fourth proportional to 429,051.67, 643,486.38 and 162,718.81 is: 244,043.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,051.67 : 643,486.38 = 162,718.81 : x
  2. Step 2: Convert to fraction form
    429,051.67/643,486.38 = 162,718.81/x
  3. Step 3: Cross multiply
    429,051.67x = 643,486.38 × 162,718.81
  4. Step 4: Simplify right side
    429,051.67x = 104,707,335,785.90
  5. Step 5: Solve for x
    x = 104,707,335,785.90/429,051.67
  6. Step 6: Final answer
    x = 244,043.65

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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.