Home / 486,971.84-730,457.74-131,985.85

Finding the Fourth Proportional to 486,971.84, 730,457.74 and 131,985.85

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Solution

The fourth proportional to 486,971.84, 730,457.74 and 131,985.85 is: 197,978.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,971.84 : 730,457.74 = 131,985.85 : x
  2. Step 2: Convert to fraction form
    486,971.84/730,457.74 = 131,985.85/x
  3. Step 3: Cross multiply
    486,971.84x = 730,457.74 × 131,985.85
  4. Step 4: Simplify right side
    486,971.84x = 96,410,085,702.98
  5. Step 5: Solve for x
    x = 96,410,085,702.98/486,971.84
  6. Step 6: Final answer
    x = 197,978.77

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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.