Home / 287,939.12-397,364.40-160,611.96

Finding the Fourth Proportional to 287,939.12, 397,364.40 and 160,611.96

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Solution

The fourth proportional to 287,939.12, 397,364.40 and 160,611.96 is: 221,649.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,939.12 : 397,364.40 = 160,611.96 : x
  2. Step 2: Convert to fraction form
    287,939.12/397,364.40 = 160,611.96/x
  3. Step 3: Cross multiply
    287,939.12x = 397,364.40 × 160,611.96
  4. Step 4: Simplify right side
    287,939.12x = 63,821,475,118.22
  5. Step 5: Solve for x
    x = 63,821,475,118.22/287,939.12
  6. Step 6: Final answer
    x = 221,649.20

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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.