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Finding the Fourth Proportional to 612,219.50, 918,396.22 and 207,703.77

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Solution

The fourth proportional to 612,219.50, 918,396.22 and 207,703.77 is: 311,578.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,219.50 : 918,396.22 = 207,703.77 : x
  2. Step 2: Convert to fraction form
    612,219.50/918,396.22 = 207,703.77/x
  3. Step 3: Cross multiply
    612,219.50x = 918,396.22 × 207,703.77
  4. Step 4: Simplify right side
    612,219.50x = 190,754,357,247.75
  5. Step 5: Solve for x
    x = 190,754,357,247.75/612,219.50
  6. Step 6: Final answer
    x = 311,578.38

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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.