Home / 282,911.52-390,408.96-155,586.72

Finding the Fourth Proportional to 282,911.52, 390,408.96 and 155,586.72

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Solution

The fourth proportional to 282,911.52, 390,408.96 and 155,586.72 is: 214,704.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,911.52 : 390,408.96 = 155,586.72 : x
  2. Step 2: Convert to fraction form
    282,911.52/390,408.96 = 155,586.72/x
  3. Step 3: Cross multiply
    282,911.52x = 390,408.96 × 155,586.72
  4. Step 4: Simplify right side
    282,911.52x = 60,742,449,545.01
  5. Step 5: Solve for x
    x = 60,742,449,545.01/282,911.52
  6. Step 6: Final answer
    x = 214,704.76

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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.