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Finding the Fourth Proportional to 292,090.40, 438,481.20 and 165,831.20

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Solution

The fourth proportional to 292,090.40, 438,481.20 and 165,831.20 is: 248,943.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,090.40 : 438,481.20 = 165,831.20 : x
  2. Step 2: Convert to fraction form
    292,090.40/438,481.20 = 165,831.20/x
  3. Step 3: Cross multiply
    292,090.40x = 438,481.20 × 165,831.20
  4. Step 4: Simplify right side
    292,090.40x = 72,713,863,573.44
  5. Step 5: Solve for x
    x = 72,713,863,573.44/292,090.40
  6. Step 6: Final answer
    x = 248,943.01

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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.