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Finding the Fourth Proportional to 247,278.90, 370,918.35 and 69,783.60

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Solution

The fourth proportional to 247,278.90, 370,918.35 and 69,783.60 is: 104,675.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,278.90 : 370,918.35 = 69,783.60 : x
  2. Step 2: Convert to fraction form
    247,278.90/370,918.35 = 69,783.60/x
  3. Step 3: Cross multiply
    247,278.90x = 370,918.35 × 69,783.60
  4. Step 4: Simplify right side
    247,278.90x = 25,884,017,769.06
  5. Step 5: Solve for x
    x = 25,884,017,769.06/247,278.90
  6. Step 6: Final answer
    x = 104,675.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.