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Finding the Fourth Proportional to 613,424.30, 920,136.45 and 192,742.70

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Solution

The fourth proportional to 613,424.30, 920,136.45 and 192,742.70 is: 289,114.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,424.30 : 920,136.45 = 192,742.70 : x
  2. Step 2: Convert to fraction form
    613,424.30/920,136.45 = 192,742.70/x
  3. Step 3: Cross multiply
    613,424.30x = 920,136.45 × 192,742.70
  4. Step 4: Simplify right side
    613,424.30x = 177,349,583,741.42
  5. Step 5: Solve for x
    x = 177,349,583,741.42/613,424.30
  6. Step 6: Final answer
    x = 289,114.05

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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.