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Finding the Fourth Proportional to 355,497.76, 490,617.30 and 202,582.72

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Solution

The fourth proportional to 355,497.76, 490,617.30 and 202,582.72 is: 279,581.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,497.76 : 490,617.30 = 202,582.72 : x
  2. Step 2: Convert to fraction form
    355,497.76/490,617.30 = 202,582.72/x
  3. Step 3: Cross multiply
    355,497.76x = 490,617.30 × 202,582.72
  4. Step 4: Simplify right side
    355,497.76x = 99,390,587,113.06
  5. Step 5: Solve for x
    x = 99,390,587,113.06/355,497.76
  6. Step 6: Final answer
    x = 279,581.47

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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.