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Finding the Fourth Proportional to 282,692.45, 390,099.08 and 155,368.14

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Solution

The fourth proportional to 282,692.45, 390,099.08 and 155,368.14 is: 214,398.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,692.45 : 390,099.08 = 155,368.14 : x
  2. Step 2: Convert to fraction form
    282,692.45/390,099.08 = 155,368.14/x
  3. Step 3: Cross multiply
    282,692.45x = 390,099.08 × 155,368.14
  4. Step 4: Simplify right side
    282,692.45x = 60,608,967,698.47
  5. Step 5: Solve for x
    x = 60,608,967,698.47/282,692.45
  6. Step 6: Final answer
    x = 214,398.97

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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.