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Finding the Fourth Proportional to 282,912.26, 390,411.14 and 155,587.85

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Solution

The fourth proportional to 282,912.26, 390,411.14 and 155,587.85 is: 214,706.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,912.26 : 390,411.14 = 155,587.85 : x
  2. Step 2: Convert to fraction form
    282,912.26/390,411.14 = 155,587.85/x
  3. Step 3: Cross multiply
    282,912.26x = 390,411.14 × 155,587.85
  4. Step 4: Simplify right side
    282,912.26x = 60,743,227,158.65
  5. Step 5: Solve for x
    x = 60,743,227,158.65/282,912.26
  6. Step 6: Final answer
    x = 214,706.95

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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.