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Finding the Fourth Proportional to 281,061.99, 387,855.81 and 160,242.19

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Solution

The fourth proportional to 281,061.99, 387,855.81 and 160,242.19 is: 221,128.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,061.99 : 387,855.81 = 160,242.19 : x
  2. Step 2: Convert to fraction form
    281,061.99/387,855.81 = 160,242.19/x
  3. Step 3: Cross multiply
    281,061.99x = 387,855.81 × 160,242.19
  4. Step 4: Simplify right side
    281,061.99x = 62,150,864,398.62
  5. Step 5: Solve for x
    x = 62,150,864,398.62/281,061.99
  6. Step 6: Final answer
    x = 221,128.67

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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.