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Finding the Fourth Proportional to 260,042.76, 390,112.38 and 82,501.80

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Solution

The fourth proportional to 260,042.76, 390,112.38 and 82,501.80 is: 123,768.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,042.76 : 390,112.38 = 82,501.80 : x
  2. Step 2: Convert to fraction form
    260,042.76/390,112.38 = 82,501.80/x
  3. Step 3: Cross multiply
    260,042.76x = 390,112.38 × 82,501.80
  4. Step 4: Simplify right side
    260,042.76x = 32,184,973,552.28
  5. Step 5: Solve for x
    x = 32,184,973,552.28/260,042.76
  6. Step 6: Final answer
    x = 123,768.00

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1.5x scale

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.