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Finding the Fourth Proportional to 380,812.08, 525,578.55 and 243,050.48

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Solution

The fourth proportional to 380,812.08, 525,578.55 and 243,050.48 is: 335,446.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,812.08 : 525,578.55 = 243,050.48 : x
  2. Step 2: Convert to fraction form
    380,812.08/525,578.55 = 243,050.48/x
  3. Step 3: Cross multiply
    380,812.08x = 525,578.55 × 243,050.48
  4. Step 4: Simplify right side
    380,812.08x = 127,742,115,012.06
  5. Step 5: Solve for x
    x = 127,742,115,012.06/380,812.08
  6. Step 6: Final answer
    x = 335,446.59

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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.