Home / 369,636.20-510,090.18-218,781.80

Finding the Fourth Proportional to 369,636.20, 510,090.18 and 218,781.80

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Solution

The fourth proportional to 369,636.20, 510,090.18 and 218,781.80 is: 301,914.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    369,636.20 : 510,090.18 = 218,781.80 : x
  2. Step 2: Convert to fraction form
    369,636.20/510,090.18 = 218,781.80/x
  3. Step 3: Cross multiply
    369,636.20x = 510,090.18 × 218,781.80
  4. Step 4: Simplify right side
    369,636.20x = 111,598,447,742.72
  5. Step 5: Solve for x
    x = 111,598,447,742.72/369,636.20
  6. Step 6: Final answer
    x = 301,914.28

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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.