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Finding the Fourth Proportional to 304,384.80, 455,921.10 and 271,142.40

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Solution

The fourth proportional to 304,384.80, 455,921.10 and 271,142.40 is: 406,129.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    304,384.80 : 455,921.10 = 271,142.40 : x
  2. Step 2: Convert to fraction form
    304,384.80/455,921.10 = 271,142.40/x
  3. Step 3: Cross multiply
    304,384.80x = 455,921.10 × 271,142.40
  4. Step 4: Simplify right side
    304,384.80x = 123,619,541,264.64
  5. Step 5: Solve for x
    x = 123,619,541,264.64/304,384.80
  6. Step 6: Final answer
    x = 406,129.15

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1.5x scale

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.