Home / 282,979.56-390,512.70-155,663.22

Finding the Fourth Proportional to 282,979.56, 390,512.70 and 155,663.22

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Solution

The fourth proportional to 282,979.56, 390,512.70 and 155,663.22 is: 214,815.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,979.56 : 390,512.70 = 155,663.22 : x
  2. Step 2: Convert to fraction form
    282,979.56/390,512.70 = 155,663.22/x
  3. Step 3: Cross multiply
    282,979.56x = 390,512.70 × 155,663.22
  4. Step 4: Simplify right side
    282,979.56x = 60,788,464,332.89
  5. Step 5: Solve for x
    x = 60,788,464,332.89/282,979.56
  6. Step 6: Final answer
    x = 214,815.74

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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.