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Finding the Fourth Proportional to 145,360.80, 217,879.20 and 56,584.80

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Solution

The fourth proportional to 145,360.80, 217,879.20 and 56,584.80 is: 84,814.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,360.80 : 217,879.20 = 56,584.80 : x
  2. Step 2: Convert to fraction form
    145,360.80/217,879.20 = 56,584.80/x
  3. Step 3: Cross multiply
    145,360.80x = 217,879.20 × 56,584.80
  4. Step 4: Simplify right side
    145,360.80x = 12,328,650,956.16
  5. Step 5: Solve for x
    x = 12,328,650,956.16/145,360.80
  6. Step 6: Final answer
    x = 84,814.14

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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.