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Finding the Fourth Proportional to 545,889, 818,720.46 and 146,434.80

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Solution

The fourth proportional to 545,889, 818,720.46 and 146,434.80 is: 219,621.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,889 : 818,720.46 = 146,434.80 : x
  2. Step 2: Convert to fraction form
    545,889/818,720.46 = 146,434.80/x
  3. Step 3: Cross multiply
    545,889x = 818,720.46 × 146,434.80
  4. Step 4: Simplify right side
    545,889x = 119,889,166,816.01
  5. Step 5: Solve for x
    x = 119,889,166,816.01/545,889
  6. Step 6: Final answer
    x = 219,621.88

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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.