Home / 282,942.84-390,472.26-155,630.28

Finding the Fourth Proportional to 282,942.84, 390,472.26 and 155,630.28

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Solution

The fourth proportional to 282,942.84, 390,472.26 and 155,630.28 is: 214,775.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,942.84 : 390,472.26 = 155,630.28 : x
  2. Step 2: Convert to fraction form
    282,942.84/390,472.26 = 155,630.28/x
  3. Step 3: Cross multiply
    282,942.84x = 390,472.26 × 155,630.28
  4. Step 4: Simplify right side
    282,942.84x = 60,769,307,156.03
  5. Step 5: Solve for x
    x = 60,769,307,156.03/282,942.84
  6. Step 6: Final answer
    x = 214,775.91

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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.