Home / 218,918.57-302,108.16-118,316.57

Finding the Fourth Proportional to 218,918.57, 302,108.16 and 118,316.57

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Solution

The fourth proportional to 218,918.57, 302,108.16 and 118,316.57 is: 163,277.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,918.57 : 302,108.16 = 118,316.57 : x
  2. Step 2: Convert to fraction form
    218,918.57/302,108.16 = 118,316.57/x
  3. Step 3: Cross multiply
    218,918.57x = 302,108.16 × 118,316.57
  4. Step 4: Simplify right side
    218,918.57x = 35,744,401,260.21
  5. Step 5: Solve for x
    x = 35,744,401,260.21/218,918.57
  6. Step 6: Final answer
    x = 163,277.15

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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.