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Finding the Fourth Proportional to 353,630.57, 530,440.64 and 87,391.07

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Solution

The fourth proportional to 353,630.57, 530,440.64 and 87,391.07 is: 131,085.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,630.57 : 530,440.64 = 87,391.07 : x
  2. Step 2: Convert to fraction form
    353,630.57/530,440.64 = 87,391.07/x
  3. Step 3: Cross multiply
    353,630.57x = 530,440.64 × 87,391.07
  4. Step 4: Simplify right side
    353,630.57x = 46,355,772,011.93
  5. Step 5: Solve for x
    x = 46,355,772,011.93/353,630.57
  6. Step 6: Final answer
    x = 131,085.31

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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.