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Finding the Fourth Proportional to 282,692.03, 390,116.27 and 155,375.83

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Solution

The fourth proportional to 282,692.03, 390,116.27 and 155,375.83 is: 214,419.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,692.03 : 390,116.27 = 155,375.83 : x
  2. Step 2: Convert to fraction form
    282,692.03/390,116.27 = 155,375.83/x
  3. Step 3: Cross multiply
    282,692.03x = 390,116.27 × 155,375.83
  4. Step 4: Simplify right side
    282,692.03x = 60,614,636,520.29
  5. Step 5: Solve for x
    x = 60,614,636,520.29/282,692.03
  6. Step 6: Final answer
    x = 214,419.33

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.