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Finding the Fourth Proportional to 355,405.20, 532,330.20 and 308,749.20

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Solution

The fourth proportional to 355,405.20, 532,330.20 and 308,749.20 is: 462,448.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,405.20 : 532,330.20 = 308,749.20 : x
  2. Step 2: Convert to fraction form
    355,405.20/532,330.20 = 308,749.20/x
  3. Step 3: Cross multiply
    355,405.20x = 532,330.20 × 308,749.20
  4. Step 4: Simplify right side
    355,405.20x = 164,356,523,385.84
  5. Step 5: Solve for x
    x = 164,356,523,385.84/355,405.20
  6. Step 6: Final answer
    x = 462,448.28

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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.