Home / 219,185.22-302,379.48-128,495.28

Finding the Fourth Proportional to 219,185.22, 302,379.48 and 128,495.28

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Solution

The fourth proportional to 219,185.22, 302,379.48 and 128,495.28 is: 177,267.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,185.22 : 302,379.48 = 128,495.28 : x
  2. Step 2: Convert to fraction form
    219,185.22/302,379.48 = 128,495.28/x
  3. Step 3: Cross multiply
    219,185.22x = 302,379.48 × 128,495.28
  4. Step 4: Simplify right side
    219,185.22x = 38,854,335,948.85
  5. Step 5: Solve for x
    x = 38,854,335,948.85/219,185.22
  6. Step 6: Final answer
    x = 177,267.13

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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.