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Finding the Fourth Proportional to 545,090.23, 817,573.05 and 145,762.13

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Solution

The fourth proportional to 545,090.23, 817,573.05 and 145,762.13 is: 218,626.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,090.23 : 817,573.05 = 145,762.13 : x
  2. Step 2: Convert to fraction form
    545,090.23/817,573.05 = 145,762.13/x
  3. Step 3: Cross multiply
    545,090.23x = 817,573.05 × 145,762.13
  4. Step 4: Simplify right side
    545,090.23x = 119,171,191,242.53
  5. Step 5: Solve for x
    x = 119,171,191,242.53/545,090.23
  6. Step 6: Final answer
    x = 218,626.54

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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.