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Finding the Fourth Proportional to 545,064.12, 817,630.74 and 171,101.88

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Solution

The fourth proportional to 545,064.12, 817,630.74 and 171,101.88 is: 256,663.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,064.12 : 817,630.74 = 171,101.88 : x
  2. Step 2: Convert to fraction form
    545,064.12/817,630.74 = 171,101.88/x
  3. Step 3: Cross multiply
    545,064.12x = 817,630.74 × 171,101.88
  4. Step 4: Simplify right side
    545,064.12x = 139,898,156,759.79
  5. Step 5: Solve for x
    x = 139,898,156,759.79/545,064.12
  6. Step 6: Final answer
    x = 256,663.67

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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.