Home / 425,621.64-638,469.36-122,017.17

Finding the Fourth Proportional to 425,621.64, 638,469.36 and 122,017.17

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Solution

The fourth proportional to 425,621.64, 638,469.36 and 122,017.17 is: 183,036.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,621.64 : 638,469.36 = 122,017.17 : x
  2. Step 2: Convert to fraction form
    425,621.64/638,469.36 = 122,017.17/x
  3. Step 3: Cross multiply
    425,621.64x = 638,469.36 × 122,017.17
  4. Step 4: Simplify right side
    425,621.64x = 77,904,226,278.50
  5. Step 5: Solve for x
    x = 77,904,226,278.50/425,621.64
  6. Step 6: Final answer
    x = 183,036.34

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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.