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Finding the Fourth Proportional to 393,528.66, 590,417.55 and 140,803.62

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Solution

The fourth proportional to 393,528.66, 590,417.55 and 140,803.62 is: 211,250.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,528.66 : 590,417.55 = 140,803.62 : x
  2. Step 2: Convert to fraction form
    393,528.66/590,417.55 = 140,803.62/x
  3. Step 3: Cross multiply
    393,528.66x = 590,417.55 × 140,803.62
  4. Step 4: Simplify right side
    393,528.66x = 83,132,928,351.53
  5. Step 5: Solve for x
    x = 83,132,928,351.53/393,528.66
  6. Step 6: Final answer
    x = 211,250.00

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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.