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Finding the Fourth Proportional to 282,626.69, 390,020.40 and 155,299.55

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Solution

The fourth proportional to 282,626.69, 390,020.40 and 155,299.55 is: 214,310.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,626.69 : 390,020.40 = 155,299.55 : x
  2. Step 2: Convert to fraction form
    282,626.69/390,020.40 = 155,299.55/x
  3. Step 3: Cross multiply
    282,626.69x = 390,020.40 × 155,299.55
  4. Step 4: Simplify right side
    282,626.69x = 60,569,992,610.82
  5. Step 5: Solve for x
    x = 60,569,992,610.82/282,626.69
  6. Step 6: Final answer
    x = 214,310.94

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1.5x scale

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.