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Finding the Fourth Proportional to 545,145.30, 817,754.40 and 185,310.90

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Solution

The fourth proportional to 545,145.30, 817,754.40 and 185,310.90 is: 277,978.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,145.30 : 817,754.40 = 185,310.90 : x
  2. Step 2: Convert to fraction form
    545,145.30/817,754.40 = 185,310.90/x
  3. Step 3: Cross multiply
    545,145.30x = 817,754.40 × 185,310.90
  4. Step 4: Simplify right side
    545,145.30x = 151,538,803,842.96
  5. Step 5: Solve for x
    x = 151,538,803,842.96/545,145.30
  6. Step 6: Final answer
    x = 277,978.74

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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.