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Finding the Fourth Proportional to 282,701.27, 390,121.19 and 153,636.68

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Solution

The fourth proportional to 282,701.27, 390,121.19 and 153,636.68 is: 212,015.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,701.27 : 390,121.19 = 153,636.68 : x
  2. Step 2: Convert to fraction form
    282,701.27/390,121.19 = 153,636.68/x
  3. Step 3: Cross multiply
    282,701.27x = 390,121.19 × 153,636.68
  4. Step 4: Simplify right side
    282,701.27x = 59,936,921,710.46
  5. Step 5: Solve for x
    x = 59,936,921,710.46/282,701.27
  6. Step 6: Final answer
    x = 212,015.05

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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.