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Finding the Fourth Proportional to 478,901.10, 718,250.85 and 242,021.10

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Solution

The fourth proportional to 478,901.10, 718,250.85 and 242,021.10 is: 362,980.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,901.10 : 718,250.85 = 242,021.10 : x
  2. Step 2: Convert to fraction form
    478,901.10/718,250.85 = 242,021.10/x
  3. Step 3: Cross multiply
    478,901.10x = 718,250.85 × 242,021.10
  4. Step 4: Simplify right side
    478,901.10x = 173,831,860,792.94
  5. Step 5: Solve for x
    x = 173,831,860,792.94/478,901.10
  6. Step 6: Final answer
    x = 362,980.71

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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.