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Finding the Fourth Proportional to 392,603.30, 587,742.42 and 242,360.50

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Solution

The fourth proportional to 392,603.30, 587,742.42 and 242,360.50 is: 362,823.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,603.30 : 587,742.42 = 242,360.50 : x
  2. Step 2: Convert to fraction form
    392,603.30/587,742.42 = 242,360.50/x
  3. Step 3: Cross multiply
    392,603.30x = 587,742.42 × 242,360.50
  4. Step 4: Simplify right side
    392,603.30x = 142,445,546,782.41
  5. Step 5: Solve for x
    x = 142,445,546,782.41/392,603.30
  6. Step 6: Final answer
    x = 362,823.10

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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.