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Finding the Fourth Proportional to 368,866.68, 553,439.46 and 144,387.54

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Solution

The fourth proportional to 368,866.68, 553,439.46 and 144,387.54 is: 216,635.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,866.68 : 553,439.46 = 144,387.54 : x
  2. Step 2: Convert to fraction form
    368,866.68/553,439.46 = 144,387.54/x
  3. Step 3: Cross multiply
    368,866.68x = 553,439.46 × 144,387.54
  4. Step 4: Simplify right side
    368,866.68x = 79,909,762,168.33
  5. Step 5: Solve for x
    x = 79,909,762,168.33/368,866.68
  6. Step 6: Final answer
    x = 216,635.89

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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.