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Finding the Fourth Proportional to 565,860.28, 848,790.64 and 139,404.40

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Solution

The fourth proportional to 565,860.28, 848,790.64 and 139,404.40 is: 209,106.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    565,860.28 : 848,790.64 = 139,404.40 : x
  2. Step 2: Convert to fraction form
    565,860.28/848,790.64 = 139,404.40/x
  3. Step 3: Cross multiply
    565,860.28x = 848,790.64 × 139,404.40
  4. Step 4: Simplify right side
    565,860.28x = 118,325,145,650.86
  5. Step 5: Solve for x
    x = 118,325,145,650.86/565,860.28
  6. Step 6: Final answer
    x = 209,106.65

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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.