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Finding the Fourth Proportional to 340,330.56, 469,152.54 and 217,809.42

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Solution

The fourth proportional to 340,330.56, 469,152.54 and 217,809.42 is: 300,254.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,330.56 : 469,152.54 = 217,809.42 : x
  2. Step 2: Convert to fraction form
    340,330.56/469,152.54 = 217,809.42/x
  3. Step 3: Cross multiply
    340,330.56x = 469,152.54 × 217,809.42
  4. Step 4: Simplify right side
    340,330.56x = 102,185,842,628.93
  5. Step 5: Solve for x
    x = 102,185,842,628.93/340,330.56
  6. Step 6: Final answer
    x = 300,254.68

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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.