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Finding the Fourth Proportional to 223,929.60, 335,440.80 and 139,430.40

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Solution

The fourth proportional to 223,929.60, 335,440.80 and 139,430.40 is: 208,863.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,929.60 : 335,440.80 = 139,430.40 : x
  2. Step 2: Convert to fraction form
    223,929.60/335,440.80 = 139,430.40/x
  3. Step 3: Cross multiply
    223,929.60x = 335,440.80 × 139,430.40
  4. Step 4: Simplify right side
    223,929.60x = 46,770,644,920.32
  5. Step 5: Solve for x
    x = 46,770,644,920.32/223,929.60
  6. Step 6: Final answer
    x = 208,863.16

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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.