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Finding the Fourth Proportional to 355,442.66, 490,476.16 and 202,468.84

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Solution

The fourth proportional to 355,442.66, 490,476.16 and 202,468.84 is: 279,387.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,442.66 : 490,476.16 = 202,468.84 : x
  2. Step 2: Convert to fraction form
    355,442.66/490,476.16 = 202,468.84/x
  3. Step 3: Cross multiply
    355,442.66x = 490,476.16 × 202,468.84
  4. Step 4: Simplify right side
    355,442.66x = 99,306,139,569.21
  5. Step 5: Solve for x
    x = 99,306,139,569.21/355,442.66
  6. Step 6: Final answer
    x = 279,387.23

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1.5x scale

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.