Home / 353,665.04-530,445.24-128,972.72

Finding the Fourth Proportional to 353,665.04, 530,445.24 and 128,972.72

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Solution

The fourth proportional to 353,665.04, 530,445.24 and 128,972.72 is: 193,440.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,665.04 : 530,445.24 = 128,972.72 : x
  2. Step 2: Convert to fraction form
    353,665.04/530,445.24 = 128,972.72/x
  3. Step 3: Cross multiply
    353,665.04x = 530,445.24 × 128,972.72
  4. Step 4: Simplify right side
    353,665.04x = 68,412,965,413.85
  5. Step 5: Solve for x
    x = 68,412,965,413.85/353,665.04
  6. Step 6: Final answer
    x = 193,440.00

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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.