Home / 219,403.40-302,702.82-142,887.56

Finding the Fourth Proportional to 219,403.40, 302,702.82 and 142,887.56

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Solution

The fourth proportional to 219,403.40, 302,702.82 and 142,887.56 is: 197,136.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,403.40 : 302,702.82 = 142,887.56 : x
  2. Step 2: Convert to fraction form
    219,403.40/302,702.82 = 142,887.56/x
  3. Step 3: Cross multiply
    219,403.40x = 302,702.82 × 142,887.56
  4. Step 4: Simplify right side
    219,403.40x = 43,252,467,354.92
  5. Step 5: Solve for x
    x = 43,252,467,354.92/219,403.40
  6. Step 6: Final answer
    x = 197,136.72

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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.