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Finding the Fourth Proportional to 340,004.40, 508,840.20 and 312,010.80

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Solution

The fourth proportional to 340,004.40, 508,840.20 and 312,010.80 is: 466,945.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,004.40 : 508,840.20 = 312,010.80 : x
  2. Step 2: Convert to fraction form
    340,004.40/508,840.20 = 312,010.80/x
  3. Step 3: Cross multiply
    340,004.40x = 508,840.20 × 312,010.80
  4. Step 4: Simplify right side
    340,004.40x = 158,763,637,874.16
  5. Step 5: Solve for x
    x = 158,763,637,874.16/340,004.40
  6. Step 6: Final answer
    x = 466,945.83

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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.