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Finding the Fourth Proportional to 282,648.70, 423,316.95 and 276,087.70

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Solution

The fourth proportional to 282,648.70, 423,316.95 and 276,087.70 is: 413,490.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,648.70 : 423,316.95 = 276,087.70 : x
  2. Step 2: Convert to fraction form
    282,648.70/423,316.95 = 276,087.70/x
  3. Step 3: Cross multiply
    282,648.70x = 423,316.95 × 276,087.70
  4. Step 4: Simplify right side
    282,648.70x = 116,872,603,096.52
  5. Step 5: Solve for x
    x = 116,872,603,096.52/282,648.70
  6. Step 6: Final answer
    x = 413,490.68

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.