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Finding the Fourth Proportional to 304,798.90, 421,424.76 and 266,964.34

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Solution

The fourth proportional to 304,798.90, 421,424.76 and 266,964.34 is: 369,113.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    304,798.90 : 421,424.76 = 266,964.34 : x
  2. Step 2: Convert to fraction form
    304,798.90/421,424.76 = 266,964.34/x
  3. Step 3: Cross multiply
    304,798.90x = 421,424.76 × 266,964.34
  4. Step 4: Simplify right side
    304,798.90x = 112,505,382,913.06
  5. Step 5: Solve for x
    x = 112,505,382,913.06/304,798.90
  6. Step 6: Final answer
    x = 369,113.48

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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.