Home / 282,731.52-390,160.80-155,406.72

Finding the Fourth Proportional to 282,731.52, 390,160.80 and 155,406.72

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Solution

The fourth proportional to 282,731.52, 390,160.80 and 155,406.72 is: 214,456.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,731.52 : 390,160.80 = 155,406.72 : x
  2. Step 2: Convert to fraction form
    282,731.52/390,160.80 = 155,406.72/x
  3. Step 3: Cross multiply
    282,731.52x = 390,160.80 × 155,406.72
  4. Step 4: Simplify right side
    282,731.52x = 60,633,610,200.58
  5. Step 5: Solve for x
    x = 60,633,610,200.58/282,731.52
  6. Step 6: Final answer
    x = 214,456.49

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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.