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Finding the Fourth Proportional to 219,987.90, 303,587.59 and 143,555.89

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Solution

The fourth proportional to 219,987.90, 303,587.59 and 143,555.89 is: 198,109.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,987.90 : 303,587.59 = 143,555.89 : x
  2. Step 2: Convert to fraction form
    219,987.90/303,587.59 = 143,555.89/x
  3. Step 3: Cross multiply
    219,987.90x = 303,587.59 × 143,555.89
  4. Step 4: Simplify right side
    219,987.90x = 43,581,786,675.41
  5. Step 5: Solve for x
    x = 43,581,786,675.41/219,987.90
  6. Step 6: Final answer
    x = 198,109.93

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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.