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Finding the Fourth Proportional to 304,574.48, 420,326.52 and 170,438.48

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Solution

The fourth proportional to 304,574.48, 420,326.52 and 170,438.48 is: 235,212.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    304,574.48 : 420,326.52 = 170,438.48 : x
  2. Step 2: Convert to fraction form
    304,574.48/420,326.52 = 170,438.48/x
  3. Step 3: Cross multiply
    304,574.48x = 420,326.52 × 170,438.48
  4. Step 4: Simplify right side
    304,574.48x = 71,639,813,172.49
  5. Step 5: Solve for x
    x = 71,639,813,172.49/304,574.48
  6. Step 6: Final answer
    x = 235,212.79

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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.