Home / 219,865.32-303,421.59-129,219.98

Finding the Fourth Proportional to 219,865.32, 303,421.59 and 129,219.98

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Solution

The fourth proportional to 219,865.32, 303,421.59 and 129,219.98 is: 178,327.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,865.32 : 303,421.59 = 129,219.98 : x
  2. Step 2: Convert to fraction form
    219,865.32/303,421.59 = 129,219.98/x
  3. Step 3: Cross multiply
    219,865.32x = 303,421.59 × 129,219.98
  4. Step 4: Simplify right side
    219,865.32x = 39,208,130,274.26
  5. Step 5: Solve for x
    x = 39,208,130,274.26/219,865.32
  6. Step 6: Final answer
    x = 178,327.94

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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.