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Finding the Fourth Proportional to 509,285.80, 763,928.70 and 176,861.80

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Solution

The fourth proportional to 509,285.80, 763,928.70 and 176,861.80 is: 265,292.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,285.80 : 763,928.70 = 176,861.80 : x
  2. Step 2: Convert to fraction form
    509,285.80/763,928.70 = 176,861.80/x
  3. Step 3: Cross multiply
    509,285.80x = 763,928.70 × 176,861.80
  4. Step 4: Simplify right side
    509,285.80x = 135,109,804,953.66
  5. Step 5: Solve for x
    x = 135,109,804,953.66/509,285.80
  6. Step 6: Final answer
    x = 265,292.70

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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.