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Finding the Fourth Proportional to 521,540.72, 719,602.80 and 295,186.22

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Solution

The fourth proportional to 521,540.72, 719,602.80 and 295,186.22 is: 407,287.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,540.72 : 719,602.80 = 295,186.22 : x
  2. Step 2: Convert to fraction form
    521,540.72/719,602.80 = 295,186.22/x
  3. Step 3: Cross multiply
    521,540.72x = 719,602.80 × 295,186.22
  4. Step 4: Simplify right side
    521,540.72x = 212,416,826,835.40
  5. Step 5: Solve for x
    x = 212,416,826,835.40/521,540.72
  6. Step 6: Final answer
    x = 407,287.14

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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.