Home / 278,514.98-417,705.27-128,611.18

Finding the Fourth Proportional to 278,514.98, 417,705.27 and 128,611.18

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Solution

The fourth proportional to 278,514.98, 417,705.27 and 128,611.18 is: 192,885.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,514.98 : 417,705.27 = 128,611.18 : x
  2. Step 2: Convert to fraction form
    278,514.98/417,705.27 = 128,611.18/x
  3. Step 3: Cross multiply
    278,514.98x = 417,705.27 × 128,611.18
  4. Step 4: Simplify right side
    278,514.98x = 53,721,567,666.92
  5. Step 5: Solve for x
    x = 53,721,567,666.92/278,514.98
  6. Step 6: Final answer
    x = 192,885.74

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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.