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Finding the Fourth Proportional to 355,790.52, 533,682.84 and 145,280.82

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Solution

The fourth proportional to 355,790.52, 533,682.84 and 145,280.82 is: 217,920.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,790.52 : 533,682.84 = 145,280.82 : x
  2. Step 2: Convert to fraction form
    355,790.52/533,682.84 = 145,280.82/x
  3. Step 3: Cross multiply
    355,790.52x = 533,682.84 × 145,280.82
  4. Step 4: Simplify right side
    355,790.52x = 77,533,880,615.13
  5. Step 5: Solve for x
    x = 77,533,880,615.13/355,790.52
  6. Step 6: Final answer
    x = 217,920.03

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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.