Home / 384,980.48-531,189.60-215,208.80

Finding the Fourth Proportional to 384,980.48, 531,189.60 and 215,208.80

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Solution

The fourth proportional to 384,980.48, 531,189.60 and 215,208.80 is: 296,941.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,980.48 : 531,189.60 = 215,208.80 : x
  2. Step 2: Convert to fraction form
    384,980.48/531,189.60 = 215,208.80/x
  3. Step 3: Cross multiply
    384,980.48x = 531,189.60 × 215,208.80
  4. Step 4: Simplify right side
    384,980.48x = 114,316,676,388.48
  5. Step 5: Solve for x
    x = 114,316,676,388.48/384,980.48
  6. Step 6: Final answer
    x = 296,941.49

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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.