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Finding the Fourth Proportional to 565,580.70, 848,363.64 and 139,120.21

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Solution

The fourth proportional to 565,580.70, 848,363.64 and 139,120.21 is: 208,678.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    565,580.70 : 848,363.64 = 139,120.21 : x
  2. Step 2: Convert to fraction form
    565,580.70/848,363.64 = 139,120.21/x
  3. Step 3: Cross multiply
    565,580.70x = 848,363.64 × 139,120.21
  4. Step 4: Simplify right side
    565,580.70x = 118,024,527,753.16
  5. Step 5: Solve for x
    x = 118,024,527,753.16/565,580.70
  6. Step 6: Final answer
    x = 208,678.49

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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.