Home / 280,089.15-386,456.52-159,220.86

Finding the Fourth Proportional to 280,089.15, 386,456.52 and 159,220.86

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Solution

The fourth proportional to 280,089.15, 386,456.52 and 159,220.86 is: 219,686.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,089.15 : 386,456.52 = 159,220.86 : x
  2. Step 2: Convert to fraction form
    280,089.15/386,456.52 = 159,220.86/x
  3. Step 3: Cross multiply
    280,089.15x = 386,456.52 × 159,220.86
  4. Step 4: Simplify right side
    280,089.15x = 61,531,939,467.01
  5. Step 5: Solve for x
    x = 61,531,939,467.01/280,089.15
  6. Step 6: Final answer
    x = 219,686.98

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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.