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Finding the Fourth Proportional to 486,168.40, 729,247.80 and 153,744.40

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Solution

The fourth proportional to 486,168.40, 729,247.80 and 153,744.40 is: 230,615.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,168.40 : 729,247.80 = 153,744.40 : x
  2. Step 2: Convert to fraction form
    486,168.40/729,247.80 = 153,744.40/x
  3. Step 3: Cross multiply
    486,168.40x = 729,247.80 × 153,744.40
  4. Step 4: Simplify right side
    486,168.40x = 112,117,765,462.32
  5. Step 5: Solve for x
    x = 112,117,765,462.32/486,168.40
  6. Step 6: Final answer
    x = 230,615.08

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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.