Home / 402,372.36-555,271.20-221,086.26

Finding the Fourth Proportional to 402,372.36, 555,271.20 and 221,086.26

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Solution

The fourth proportional to 402,372.36, 555,271.20 and 221,086.26 is: 305,097.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,372.36 : 555,271.20 = 221,086.26 : x
  2. Step 2: Convert to fraction form
    402,372.36/555,271.20 = 221,086.26/x
  3. Step 3: Cross multiply
    402,372.36x = 555,271.20 × 221,086.26
  4. Step 4: Simplify right side
    402,372.36x = 122,762,832,893.71
  5. Step 5: Solve for x
    x = 122,762,832,893.71/402,372.36
  6. Step 6: Final answer
    x = 305,097.58

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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.