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Finding the Fourth Proportional to 298,740.60, 412,238.70 and 171,389.16

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Solution

The fourth proportional to 298,740.60, 412,238.70 and 171,389.16 is: 236,503.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,740.60 : 412,238.70 = 171,389.16 : x
  2. Step 2: Convert to fraction form
    298,740.60/412,238.70 = 171,389.16/x
  3. Step 3: Cross multiply
    298,740.60x = 412,238.70 × 171,389.16
  4. Step 4: Simplify right side
    298,740.60x = 70,653,244,512.49
  5. Step 5: Solve for x
    x = 70,653,244,512.49/298,740.60
  6. Step 6: Final answer
    x = 236,503.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.