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Finding the Fourth Proportional to 282,438.99, 423,658.13 and 72,076.93

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Solution

The fourth proportional to 282,438.99, 423,658.13 and 72,076.93 is: 108,115.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,438.99 : 423,658.13 = 72,076.93 : x
  2. Step 2: Convert to fraction form
    282,438.99/423,658.13 = 72,076.93/x
  3. Step 3: Cross multiply
    282,438.99x = 423,658.13 × 72,076.93
  4. Step 4: Simplify right side
    282,438.99x = 30,535,977,379.94
  5. Step 5: Solve for x
    x = 30,535,977,379.94/282,438.99
  6. Step 6: Final answer
    x = 108,115.30

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1.5x scale

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.