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Finding the Fourth Proportional to 438,470.20, 657,705.30 and 248,857.30

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Solution

The fourth proportional to 438,470.20, 657,705.30 and 248,857.30 is: 373,285.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,470.20 : 657,705.30 = 248,857.30 : x
  2. Step 2: Convert to fraction form
    438,470.20/657,705.30 = 248,857.30/x
  3. Step 3: Cross multiply
    438,470.20x = 657,705.30 × 248,857.30
  4. Step 4: Simplify right side
    438,470.20x = 163,674,765,153.69
  5. Step 5: Solve for x
    x = 163,674,765,153.69/438,470.20
  6. Step 6: Final answer
    x = 373,285.95

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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.