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Finding the Fourth Proportional to 436,851.60, 655,277.40 and 121,311.60

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Solution

The fourth proportional to 436,851.60, 655,277.40 and 121,311.60 is: 181,967.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    436,851.60 : 655,277.40 = 121,311.60 : x
  2. Step 2: Convert to fraction form
    436,851.60/655,277.40 = 121,311.60/x
  3. Step 3: Cross multiply
    436,851.60x = 655,277.40 × 121,311.60
  4. Step 4: Simplify right side
    436,851.60x = 79,492,749,837.84
  5. Step 5: Solve for x
    x = 79,492,749,837.84/436,851.60
  6. Step 6: Final answer
    x = 181,967.40

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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.