Home / 282,943.84-390,473.64-155,631.28

Finding the Fourth Proportional to 282,943.84, 390,473.64 and 155,631.28

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Solution

The fourth proportional to 282,943.84, 390,473.64 and 155,631.28 is: 214,777.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,943.84 : 390,473.64 = 155,631.28 : x
  2. Step 2: Convert to fraction form
    282,943.84/390,473.64 = 155,631.28/x
  3. Step 3: Cross multiply
    282,943.84x = 390,473.64 × 155,631.28
  4. Step 4: Simplify right side
    282,943.84x = 60,769,912,399.46
  5. Step 5: Solve for x
    x = 60,769,912,399.46/282,943.84
  6. Step 6: Final answer
    x = 214,777.29

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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.