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Finding the Fourth Proportional to 368,998.80, 553,152.60 and 288,992.40

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Solution

The fourth proportional to 368,998.80, 553,152.60 and 288,992.40 is: 433,217.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,998.80 : 553,152.60 = 288,992.40 : x
  2. Step 2: Convert to fraction form
    368,998.80/553,152.60 = 288,992.40/x
  3. Step 3: Cross multiply
    368,998.80x = 553,152.60 × 288,992.40
  4. Step 4: Simplify right side
    368,998.80x = 159,856,897,440.24
  5. Step 5: Solve for x
    x = 159,856,897,440.24/368,998.80
  6. Step 6: Final answer
    x = 433,217.93

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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.