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Finding the Fourth Proportional to 437,560.70, 656,341.05 and 105,136.70

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Solution

The fourth proportional to 437,560.70, 656,341.05 and 105,136.70 is: 157,705.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    437,560.70 : 656,341.05 = 105,136.70 : x
  2. Step 2: Convert to fraction form
    437,560.70/656,341.05 = 105,136.70/x
  3. Step 3: Cross multiply
    437,560.70x = 656,341.05 × 105,136.70
  4. Step 4: Simplify right side
    437,560.70x = 69,005,532,071.54
  5. Step 5: Solve for x
    x = 69,005,532,071.54/437,560.70
  6. Step 6: Final answer
    x = 157,705.05

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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.