Home / 218,890.63-302,069.07-118,288.63

Finding the Fourth Proportional to 218,890.63, 302,069.07 and 118,288.63

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Solution

The fourth proportional to 218,890.63, 302,069.07 and 118,288.63 is: 163,238.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,890.63 : 302,069.07 = 118,288.63 : x
  2. Step 2: Convert to fraction form
    218,890.63/302,069.07 = 118,288.63/x
  3. Step 3: Cross multiply
    218,890.63x = 302,069.07 × 118,288.63
  4. Step 4: Simplify right side
    218,890.63x = 35,731,336,455.67
  5. Step 5: Solve for x
    x = 35,731,336,455.67/218,890.63
  6. Step 6: Final answer
    x = 163,238.31

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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.