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Finding the Fourth Proportional to 292,918.50, 439,377.84 and 71,302.50

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Solution

The fourth proportional to 292,918.50, 439,377.84 and 71,302.50 is: 106,953.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,918.50 : 439,377.84 = 71,302.50 : x
  2. Step 2: Convert to fraction form
    292,918.50/439,377.84 = 71,302.50/x
  3. Step 3: Cross multiply
    292,918.50x = 439,377.84 × 71,302.50
  4. Step 4: Simplify right side
    292,918.50x = 31,328,738,436.60
  5. Step 5: Solve for x
    x = 31,328,738,436.60/292,918.50
  6. Step 6: Final answer
    x = 106,953.77

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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.