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Finding the Fourth Proportional to 437,445.70, 656,168.50 and 105,021.70

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Solution

The fourth proportional to 437,445.70, 656,168.50 and 105,021.70 is: 157,532.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    437,445.70 : 656,168.50 = 105,021.70 : x
  2. Step 2: Convert to fraction form
    437,445.70/656,168.50 = 105,021.70/x
  3. Step 3: Cross multiply
    437,445.70x = 656,168.50 × 105,021.70
  4. Step 4: Simplify right side
    437,445.70x = 68,911,931,356.45
  5. Step 5: Solve for x
    x = 68,911,931,356.45/437,445.70
  6. Step 6: Final answer
    x = 157,532.54

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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.