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Finding the Fourth Proportional to 612,218.50, 918,394.72 and 207,702.77

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Solution

The fourth proportional to 612,218.50, 918,394.72 and 207,702.77 is: 311,576.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,218.50 : 918,394.72 = 207,702.77 : x
  2. Step 2: Convert to fraction form
    612,218.50/918,394.72 = 207,702.77/x
  3. Step 3: Cross multiply
    612,218.50x = 918,394.72 × 207,702.77
  4. Step 4: Simplify right side
    612,218.50x = 190,753,122,186.14
  5. Step 5: Solve for x
    x = 190,753,122,186.14/612,218.50
  6. Step 6: Final answer
    x = 311,576.87

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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.