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Finding the Fourth Proportional to 378,615.60, 567,923.40 and 355,520.88

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Solution

The fourth proportional to 378,615.60, 567,923.40 and 355,520.88 is: 533,281.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,615.60 : 567,923.40 = 355,520.88 : x
  2. Step 2: Convert to fraction form
    378,615.60/567,923.40 = 355,520.88/x
  3. Step 3: Cross multiply
    378,615.60x = 567,923.40 × 355,520.88
  4. Step 4: Simplify right side
    378,615.60x = 201,908,626,940.59
  5. Step 5: Solve for x
    x = 201,908,626,940.59/378,615.60
  6. Step 6: Final answer
    x = 533,281.32

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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.