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Finding the Fourth Proportional to 498,908.22, 688,289.46 and 368,398.60

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Solution

The fourth proportional to 498,908.22, 688,289.46 and 368,398.60 is: 508,239.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,908.22 : 688,289.46 = 368,398.60 : x
  2. Step 2: Convert to fraction form
    498,908.22/688,289.46 = 368,398.60/x
  3. Step 3: Cross multiply
    498,908.22x = 688,289.46 × 368,398.60
  4. Step 4: Simplify right side
    498,908.22x = 253,564,873,458.76
  5. Step 5: Solve for x
    x = 253,564,873,458.76/498,908.22
  6. Step 6: Final answer
    x = 508,239.52

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.