Home / 401,664.69-554,312.97-220,384.26

Finding the Fourth Proportional to 401,664.69, 554,312.97 and 220,384.26

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Solution

The fourth proportional to 401,664.69, 554,312.97 and 220,384.26 is: 304,138.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,664.69 : 554,312.97 = 220,384.26 : x
  2. Step 2: Convert to fraction form
    401,664.69/554,312.97 = 220,384.26/x
  3. Step 3: Cross multiply
    401,664.69x = 554,312.97 × 220,384.26
  4. Step 4: Simplify right side
    401,664.69x = 122,161,853,701.85
  5. Step 5: Solve for x
    x = 122,161,853,701.85/401,664.69
  6. Step 6: Final answer
    x = 304,138.89

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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.