Home / 287,890.08-397,289-160,573.92

Finding the Fourth Proportional to 287,890.08, 397,289 and 160,573.92

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Solution

The fourth proportional to 287,890.08, 397,289 and 160,573.92 is: 221,592.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,890.08 : 397,289 = 160,573.92 : x
  2. Step 2: Convert to fraction form
    287,890.08/397,289 = 160,573.92/x
  3. Step 3: Cross multiply
    287,890.08x = 397,289 × 160,573.92
  4. Step 4: Simplify right side
    287,890.08x = 63,794,252,102.88
  5. Step 5: Solve for x
    x = 63,794,252,102.88/287,890.08
  6. Step 6: Final answer
    x = 221,592.39

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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.