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Finding the Fourth Proportional to 248,756.64, 373,190.40 and 90,981.60

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Solution

The fourth proportional to 248,756.64, 373,190.40 and 90,981.60 is: 136,492.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,756.64 : 373,190.40 = 90,981.60 : x
  2. Step 2: Convert to fraction form
    248,756.64/373,190.40 = 90,981.60/x
  3. Step 3: Cross multiply
    248,756.64x = 373,190.40 × 90,981.60
  4. Step 4: Simplify right side
    248,756.64x = 33,953,459,696.64
  5. Step 5: Solve for x
    x = 33,953,459,696.64/248,756.64
  6. Step 6: Final answer
    x = 136,492.68

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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.