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Finding the Fourth Proportional to 390,085.40, 584,076.50 and 254,814.44

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Solution

The fourth proportional to 390,085.40, 584,076.50 and 254,814.44 is: 381,534.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,085.40 : 584,076.50 = 254,814.44 : x
  2. Step 2: Convert to fraction form
    390,085.40/584,076.50 = 254,814.44/x
  3. Step 3: Cross multiply
    390,085.40x = 584,076.50 × 254,814.44
  4. Step 4: Simplify right side
    390,085.40x = 148,831,126,264.66
  5. Step 5: Solve for x
    x = 148,831,126,264.66/390,085.40
  6. Step 6: Final answer
    x = 381,534.73

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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.