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Finding the Fourth Proportional to 145,574.28, 218,361.42 and 40,393.28

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Solution

The fourth proportional to 145,574.28, 218,361.42 and 40,393.28 is: 60,589.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,574.28 : 218,361.42 = 40,393.28 : x
  2. Step 2: Convert to fraction form
    145,574.28/218,361.42 = 40,393.28/x
  3. Step 3: Cross multiply
    145,574.28x = 218,361.42 × 40,393.28
  4. Step 4: Simplify right side
    145,574.28x = 8,820,334,525.16
  5. Step 5: Solve for x
    x = 8,820,334,525.16/145,574.28
  6. Step 6: Final answer
    x = 60,589.92

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1.5x scale

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.