Home / 282,982.54-390,509.49-155,655.40

Finding the Fourth Proportional to 282,982.54, 390,509.49 and 155,655.40

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Solution

The fourth proportional to 282,982.54, 390,509.49 and 155,655.40 is: 214,800.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,982.54 : 390,509.49 = 155,655.40 : x
  2. Step 2: Convert to fraction form
    282,982.54/390,509.49 = 155,655.40/x
  3. Step 3: Cross multiply
    282,982.54x = 390,509.49 × 155,655.40
  4. Step 4: Simplify right side
    282,982.54x = 60,784,910,869.75
  5. Step 5: Solve for x
    x = 60,784,910,869.75/282,982.54
  6. Step 6: Final answer
    x = 214,800.92

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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.