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Finding the Fourth Proportional to 292,863.07, 439,172.92 and 143,059.87

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Solution

The fourth proportional to 292,863.07, 439,172.92 and 143,059.87 is: 214,530.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,863.07 : 439,172.92 = 143,059.87 : x
  2. Step 2: Convert to fraction form
    292,863.07/439,172.92 = 143,059.87/x
  3. Step 3: Cross multiply
    292,863.07x = 439,172.92 × 143,059.87
  4. Step 4: Simplify right side
    292,863.07x = 62,828,020,842.72
  5. Step 5: Solve for x
    x = 62,828,020,842.72/292,863.07
  6. Step 6: Final answer
    x = 214,530.36

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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.