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Finding the Fourth Proportional to 319,599.48, 440,889.30 and 209,152.74

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Solution

The fourth proportional to 319,599.48, 440,889.30 and 209,152.74 is: 288,527.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,599.48 : 440,889.30 = 209,152.74 : x
  2. Step 2: Convert to fraction form
    319,599.48/440,889.30 = 209,152.74/x
  3. Step 3: Cross multiply
    319,599.48x = 440,889.30 × 209,152.74
  4. Step 4: Simplify right side
    319,599.48x = 92,213,205,131.68
  5. Step 5: Solve for x
    x = 92,213,205,131.68/319,599.48
  6. Step 6: Final answer
    x = 288,527.39

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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.