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Finding the Fourth Proportional to 336,430.80, 504,646.20 and 136,684.80

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Solution

The fourth proportional to 336,430.80, 504,646.20 and 136,684.80 is: 205,027.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    336,430.80 : 504,646.20 = 136,684.80 : x
  2. Step 2: Convert to fraction form
    336,430.80/504,646.20 = 136,684.80/x
  3. Step 3: Cross multiply
    336,430.80x = 504,646.20 × 136,684.80
  4. Step 4: Simplify right side
    336,430.80x = 68,977,464,917.76
  5. Step 5: Solve for x
    x = 68,977,464,917.76/336,430.80
  6. Step 6: Final answer
    x = 205,027.20

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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.