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Finding the Fourth Proportional to 339,429.21, 508,368.80 and 162,060.78

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Solution

The fourth proportional to 339,429.21, 508,368.80 and 162,060.78 is: 242,721.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,429.21 : 508,368.80 = 162,060.78 : x
  2. Step 2: Convert to fraction form
    339,429.21/508,368.80 = 162,060.78/x
  3. Step 3: Cross multiply
    339,429.21x = 508,368.80 × 162,060.78
  4. Step 4: Simplify right side
    339,429.21x = 82,386,643,445.36
  5. Step 5: Solve for x
    x = 82,386,643,445.36/339,429.21
  6. Step 6: Final answer
    x = 242,721.14

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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.