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Finding the Fourth Proportional to 304,674.85, 420,889.24 and 243,340.51

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Solution

The fourth proportional to 304,674.85, 420,889.24 and 243,340.51 is: 336,159.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    304,674.85 : 420,889.24 = 243,340.51 : x
  2. Step 2: Convert to fraction form
    304,674.85/420,889.24 = 243,340.51/x
  3. Step 3: Cross multiply
    304,674.85x = 420,889.24 × 243,340.51
  4. Step 4: Simplify right side
    304,674.85x = 102,419,400,210.67
  5. Step 5: Solve for x
    x = 102,419,400,210.67/304,674.85
  6. Step 6: Final answer
    x = 336,159.69

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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.