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Finding the Fourth Proportional to 612,767.61, 919,176.12 and 213,448.77

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Solution

The fourth proportional to 612,767.61, 919,176.12 and 213,448.77 is: 320,181.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,767.61 : 919,176.12 = 213,448.77 : x
  2. Step 2: Convert to fraction form
    612,767.61/919,176.12 = 213,448.77/x
  3. Step 3: Cross multiply
    612,767.61x = 919,176.12 × 213,448.77
  4. Step 4: Simplify right side
    612,767.61x = 196,197,012,227.37
  5. Step 5: Solve for x
    x = 196,197,012,227.37/612,767.61
  6. Step 6: Final answer
    x = 320,181.76

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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.