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Finding the Fourth Proportional to 282,116.99, 389,328.60 and 154,792.55

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Solution

The fourth proportional to 282,116.99, 389,328.60 and 154,792.55 is: 213,617.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,116.99 : 389,328.60 = 154,792.55 : x
  2. Step 2: Convert to fraction form
    282,116.99/389,328.60 = 154,792.55/x
  3. Step 3: Cross multiply
    282,116.99x = 389,328.60 × 154,792.55
  4. Step 4: Simplify right side
    282,116.99x = 60,265,164,835.29
  5. Step 5: Solve for x
    x = 60,265,164,835.29/282,116.99
  6. Step 6: Final answer
    x = 213,617.64

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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.