Home / 282,905.52-390,400.68-155,580.72

Finding the Fourth Proportional to 282,905.52, 390,400.68 and 155,580.72

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Solution

The fourth proportional to 282,905.52, 390,400.68 and 155,580.72 is: 214,696.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,905.52 : 390,400.68 = 155,580.72 : x
  2. Step 2: Convert to fraction form
    282,905.52/390,400.68 = 155,580.72/x
  3. Step 3: Cross multiply
    282,905.52x = 390,400.68 × 155,580.72
  4. Step 4: Simplify right side
    282,905.52x = 60,738,818,882.89
  5. Step 5: Solve for x
    x = 60,738,818,882.89/282,905.52
  6. Step 6: Final answer
    x = 214,696.48

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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.