Home / 385,316.64-531,736.80-215,550.72

Finding the Fourth Proportional to 385,316.64, 531,736.80 and 215,550.72

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Solution

The fourth proportional to 385,316.64, 531,736.80 and 215,550.72 is: 297,459.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,316.64 : 531,736.80 = 215,550.72 : x
  2. Step 2: Convert to fraction form
    385,316.64/531,736.80 = 215,550.72/x
  3. Step 3: Cross multiply
    385,316.64x = 531,736.80 × 215,550.72
  4. Step 4: Simplify right side
    385,316.64x = 114,616,250,090.50
  5. Step 5: Solve for x
    x = 114,616,250,090.50/385,316.64
  6. Step 6: Final answer
    x = 297,459.90

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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.