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Finding the Fourth Proportional to 612,530.49, 919,059.09 and 212,953.44

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Solution

The fourth proportional to 612,530.49, 919,059.09 and 212,953.44 is: 319,521.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,530.49 : 919,059.09 = 212,953.44 : x
  2. Step 2: Convert to fraction form
    612,530.49/919,059.09 = 212,953.44/x
  3. Step 3: Cross multiply
    612,530.49x = 919,059.09 × 212,953.44
  4. Step 4: Simplify right side
    612,530.49x = 195,716,794,778.77
  5. Step 5: Solve for x
    x = 195,716,794,778.77/612,530.49
  6. Step 6: Final answer
    x = 319,521.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.