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Finding the Fourth Proportional to 282,768.76, 390,230.22 and 155,449.72

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Solution

The fourth proportional to 282,768.76, 390,230.22 and 155,449.72 is: 214,525.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,768.76 : 390,230.22 = 155,449.72 : x
  2. Step 2: Convert to fraction form
    282,768.76/390,230.22 = 155,449.72/x
  3. Step 3: Cross multiply
    282,768.76x = 390,230.22 × 155,449.72
  4. Step 4: Simplify right side
    282,768.76x = 60,661,178,434.54
  5. Step 5: Solve for x
    x = 60,661,178,434.54/282,768.76
  6. Step 6: Final answer
    x = 214,525.74

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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.