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Finding the Fourth Proportional to 304,678.92, 421,259.54 and 266,844.76

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Solution

The fourth proportional to 304,678.92, 421,259.54 and 266,844.76 is: 368,948.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    304,678.92 : 421,259.54 = 266,844.76 : x
  2. Step 2: Convert to fraction form
    304,678.92/421,259.54 = 266,844.76/x
  3. Step 3: Cross multiply
    304,678.92x = 421,259.54 × 266,844.76
  4. Step 4: Simplify right side
    304,678.92x = 112,410,900,849.01
  5. Step 5: Solve for x
    x = 112,410,900,849.01/304,678.92
  6. Step 6: Final answer
    x = 368,948.73

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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.