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Finding the Fourth Proportional to 355,655.20, 532,705.20 and 276,145.60

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Solution

The fourth proportional to 355,655.20, 532,705.20 and 276,145.60 is: 413,614.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,655.20 : 532,705.20 = 276,145.60 : x
  2. Step 2: Convert to fraction form
    355,655.20/532,705.20 = 276,145.60/x
  3. Step 3: Cross multiply
    355,655.20x = 532,705.20 × 276,145.60
  4. Step 4: Simplify right side
    355,655.20x = 147,104,197,077.12
  5. Step 5: Solve for x
    x = 147,104,197,077.12/355,655.20
  6. Step 6: Final answer
    x = 413,614.64

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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.