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Finding the Fourth Proportional to 282,900.96, 390,395.54 and 155,576.55

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Solution

The fourth proportional to 282,900.96, 390,395.54 and 155,576.55 is: 214,691.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,900.96 : 390,395.54 = 155,576.55 : x
  2. Step 2: Convert to fraction form
    282,900.96/390,395.54 = 155,576.55/x
  3. Step 3: Cross multiply
    282,900.96x = 390,395.54 × 155,576.55
  4. Step 4: Simplify right side
    282,900.96x = 60,736,390,470.70
  5. Step 5: Solve for x
    x = 60,736,390,470.70/282,900.96
  6. Step 6: Final answer
    x = 214,691.36

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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.