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Finding the Fourth Proportional to 319,031.87, 440,186.94 and 210,124.67

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Solution

The fourth proportional to 319,031.87, 440,186.94 and 210,124.67 is: 289,921.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,031.87 : 440,186.94 = 210,124.67 : x
  2. Step 2: Convert to fraction form
    319,031.87/440,186.94 = 210,124.67/x
  3. Step 3: Cross multiply
    319,031.87x = 440,186.94 × 210,124.67
  4. Step 4: Simplify right side
    319,031.87x = 92,494,133,304.88
  5. Step 5: Solve for x
    x = 92,494,133,304.88/319,031.87
  6. Step 6: Final answer
    x = 289,921.30

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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.