Home / 219,188.22-302,383.62-128,498.28

Finding the Fourth Proportional to 219,188.22, 302,383.62 and 128,498.28

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Solution

The fourth proportional to 219,188.22, 302,383.62 and 128,498.28 is: 177,271.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,188.22 : 302,383.62 = 128,498.28 : x
  2. Step 2: Convert to fraction form
    219,188.22/302,383.62 = 128,498.28/x
  3. Step 3: Cross multiply
    219,188.22x = 302,383.62 × 128,498.28
  4. Step 4: Simplify right side
    219,188.22x = 38,855,775,070.17
  5. Step 5: Solve for x
    x = 38,855,775,070.17/219,188.22
  6. Step 6: Final answer
    x = 177,271.27

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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.