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Finding the Fourth Proportional to 355,480.74, 490,569.24 and 212,253.30

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Solution

The fourth proportional to 355,480.74, 490,569.24 and 212,253.30 is: 292,913.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,480.74 : 490,569.24 = 212,253.30 : x
  2. Step 2: Convert to fraction form
    355,480.74/490,569.24 = 212,253.30/x
  3. Step 3: Cross multiply
    355,480.74x = 490,569.24 × 212,253.30
  4. Step 4: Simplify right side
    355,480.74x = 104,124,940,068.49
  5. Step 5: Solve for x
    x = 104,124,940,068.49/355,480.74
  6. Step 6: Final answer
    x = 292,913.03

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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.