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Finding the Fourth Proportional to 504,056.80, 756,085.20 and 130,079.80

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Solution

The fourth proportional to 504,056.80, 756,085.20 and 130,079.80 is: 195,119.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    504,056.80 : 756,085.20 = 130,079.80 : x
  2. Step 2: Convert to fraction form
    504,056.80/756,085.20 = 130,079.80/x
  3. Step 3: Cross multiply
    504,056.80x = 756,085.20 × 130,079.80
  4. Step 4: Simplify right side
    504,056.80x = 98,351,411,598.96
  5. Step 5: Solve for x
    x = 98,351,411,598.96/504,056.80
  6. Step 6: Final answer
    x = 195,119.70

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Double scale
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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.