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Finding the Fourth Proportional to 245,220.40, 367,830.60 and 243,665.20

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Solution

The fourth proportional to 245,220.40, 367,830.60 and 243,665.20 is: 365,497.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,220.40 : 367,830.60 = 243,665.20 : x
  2. Step 2: Convert to fraction form
    245,220.40/367,830.60 = 243,665.20/x
  3. Step 3: Cross multiply
    245,220.40x = 367,830.60 × 243,665.20
  4. Step 4: Simplify right side
    245,220.40x = 89,627,516,715.12
  5. Step 5: Solve for x
    x = 89,627,516,715.12/245,220.40
  6. Step 6: Final answer
    x = 365,497.80

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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.