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Finding the Fourth Proportional to 545,064.66, 817,600.64 and 190,077.30

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Solution

The fourth proportional to 545,064.66, 817,600.64 and 190,077.30 is: 285,117.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,064.66 : 817,600.64 = 190,077.30 : x
  2. Step 2: Convert to fraction form
    545,064.66/817,600.64 = 190,077.30/x
  3. Step 3: Cross multiply
    545,064.66x = 817,600.64 × 190,077.30
  4. Step 4: Simplify right side
    545,064.66x = 155,407,321,179.09
  5. Step 5: Solve for x
    x = 155,407,321,179.09/545,064.66
  6. Step 6: Final answer
    x = 285,117.22

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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.