Home / 221,599.44-305,439-156,985.76

Finding the Fourth Proportional to 221,599.44, 305,439 and 156,985.76

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Solution

The fourth proportional to 221,599.44, 305,439 and 156,985.76 is: 216,379.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,599.44 : 305,439 = 156,985.76 : x
  2. Step 2: Convert to fraction form
    221,599.44/305,439 = 156,985.76/x
  3. Step 3: Cross multiply
    221,599.44x = 305,439 × 156,985.76
  4. Step 4: Simplify right side
    221,599.44x = 47,949,573,548.64
  5. Step 5: Solve for x
    x = 47,949,573,548.64/221,599.44
  6. Step 6: Final answer
    x = 216,379.49

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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.