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Finding the Fourth Proportional to 245,428.86, 338,553.44 and 147,287.00

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Solution

The fourth proportional to 245,428.86, 338,553.44 and 147,287.00 is: 203,173.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,428.86 : 338,553.44 = 147,287.00 : x
  2. Step 2: Convert to fraction form
    245,428.86/338,553.44 = 147,287.00/x
  3. Step 3: Cross multiply
    245,428.86x = 338,553.44 × 147,287.00
  4. Step 4: Simplify right side
    245,428.86x = 49,864,520,941.51
  5. Step 5: Solve for x
    x = 49,864,520,941.51/245,428.86
  6. Step 6: Final answer
    x = 203,173.01

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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.