Home / 282,816.72-390,277.10-155,491.34

Finding the Fourth Proportional to 282,816.72, 390,277.10 and 155,491.34

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Solution

The fourth proportional to 282,816.72, 390,277.10 and 155,491.34 is: 214,572.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,816.72 : 390,277.10 = 155,491.34 : x
  2. Step 2: Convert to fraction form
    282,816.72/390,277.10 = 155,491.34/x
  3. Step 3: Cross multiply
    282,816.72x = 390,277.10 × 155,491.34
  4. Step 4: Simplify right side
    282,816.72x = 60,684,707,687.66
  5. Step 5: Solve for x
    x = 60,684,707,687.66/282,816.72
  6. Step 6: Final answer
    x = 214,572.56

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1.5x scale

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.