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Finding the Fourth Proportional to 397,210.54, 548,017.14 and 225,115.00

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Solution

The fourth proportional to 397,210.54, 548,017.14 and 225,115.00 is: 310,583.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,210.54 : 548,017.14 = 225,115.00 : x
  2. Step 2: Convert to fraction form
    397,210.54/548,017.14 = 225,115.00/x
  3. Step 3: Cross multiply
    397,210.54x = 548,017.14 × 225,115.00
  4. Step 4: Simplify right side
    397,210.54x = 123,366,877,898.51
  5. Step 5: Solve for x
    x = 123,366,877,898.51/397,210.54
  6. Step 6: Final answer
    x = 310,583.09

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1.5x scale

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.