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Finding the Fourth Proportional to 393,485.10, 590,227.65 and 168,807.30

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Solution

The fourth proportional to 393,485.10, 590,227.65 and 168,807.30 is: 253,210.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,485.10 : 590,227.65 = 168,807.30 : x
  2. Step 2: Convert to fraction form
    393,485.10/590,227.65 = 168,807.30/x
  3. Step 3: Cross multiply
    393,485.10x = 590,227.65 × 168,807.30
  4. Step 4: Simplify right side
    393,485.10x = 99,634,735,981.85
  5. Step 5: Solve for x
    x = 99,634,735,981.85/393,485.10
  6. Step 6: Final answer
    x = 253,210.95

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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.