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Finding the Fourth Proportional to 324,437.40, 447,693.48 and 209,718.72

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Solution

The fourth proportional to 324,437.40, 447,693.48 and 209,718.72 is: 289,392.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,437.40 : 447,693.48 = 209,718.72 : x
  2. Step 2: Convert to fraction form
    324,437.40/447,693.48 = 209,718.72/x
  3. Step 3: Cross multiply
    324,437.40x = 447,693.48 × 209,718.72
  4. Step 4: Simplify right side
    324,437.40x = 93,889,703,577.95
  5. Step 5: Solve for x
    x = 93,889,703,577.95/324,437.40
  6. Step 6: Final answer
    x = 289,392.36

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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.