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Finding the Fourth Proportional to 387,003.60, 579,630.60 and 229,539.60

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Solution

The fourth proportional to 387,003.60, 579,630.60 and 229,539.60 is: 343,790.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,003.60 : 579,630.60 = 229,539.60 : x
  2. Step 2: Convert to fraction form
    387,003.60/579,630.60 = 229,539.60/x
  3. Step 3: Cross multiply
    387,003.60x = 579,630.60 × 229,539.60
  4. Step 4: Simplify right side
    387,003.60x = 133,048,176,071.76
  5. Step 5: Solve for x
    x = 133,048,176,071.76/387,003.60
  6. Step 6: Final answer
    x = 343,790.54

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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.