Home / 455,437.20-683,155.80-139,853.10

Finding the Fourth Proportional to 455,437.20, 683,155.80 and 139,853.10

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Solution

The fourth proportional to 455,437.20, 683,155.80 and 139,853.10 is: 209,779.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,437.20 : 683,155.80 = 139,853.10 : x
  2. Step 2: Convert to fraction form
    455,437.20/683,155.80 = 139,853.10/x
  3. Step 3: Cross multiply
    455,437.20x = 683,155.80 × 139,853.10
  4. Step 4: Simplify right side
    455,437.20x = 95,541,456,412.98
  5. Step 5: Solve for x
    x = 95,541,456,412.98/455,437.20
  6. Step 6: Final answer
    x = 209,779.65

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Similar ratio
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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.