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Finding the Fourth Proportional to 545,009, 817,542.66 and 171,061.16

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Solution

The fourth proportional to 545,009, 817,542.66 and 171,061.16 is: 256,600.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,009 : 817,542.66 = 171,061.16 : x
  2. Step 2: Convert to fraction form
    545,009/817,542.66 = 171,061.16/x
  3. Step 3: Cross multiply
    545,009x = 817,542.66 × 171,061.16
  4. Step 4: Simplify right side
    545,009x = 139,849,795,769.09
  5. Step 5: Solve for x
    x = 139,849,795,769.09/545,009
  6. Step 6: Final answer
    x = 256,600.89

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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.