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Finding the Fourth Proportional to 402,801.51, 555,855.00 and 221,513.44

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Solution

The fourth proportional to 402,801.51, 555,855.00 and 221,513.44 is: 305,682.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,801.51 : 555,855.00 = 221,513.44 : x
  2. Step 2: Convert to fraction form
    402,801.51/555,855.00 = 221,513.44/x
  3. Step 3: Cross multiply
    402,801.51x = 555,855.00 × 221,513.44
  4. Step 4: Simplify right side
    402,801.51x = 123,129,355,133.97
  5. Step 5: Solve for x
    x = 123,129,355,133.97/402,801.51
  6. Step 6: Final answer
    x = 305,682.45

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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.