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Finding the Fourth Proportional to 218,945.69, 302,145.08 and 118,343.69

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Solution

The fourth proportional to 218,945.69, 302,145.08 and 118,343.69 is: 163,314.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,945.69 : 302,145.08 = 118,343.69 : x
  2. Step 2: Convert to fraction form
    218,945.69/302,145.08 = 118,343.69/x
  3. Step 3: Cross multiply
    218,945.69x = 302,145.08 × 118,343.69
  4. Step 4: Simplify right side
    218,945.69x = 35,756,963,682.55
  5. Step 5: Solve for x
    x = 35,756,963,682.55/218,945.69
  6. Step 6: Final answer
    x = 163,314.31

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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.