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Finding the Fourth Proportional to 491,144.40, 736,716.60 and 158,720.40

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Solution

The fourth proportional to 491,144.40, 736,716.60 and 158,720.40 is: 238,080.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,144.40 : 736,716.60 = 158,720.40 : x
  2. Step 2: Convert to fraction form
    491,144.40/736,716.60 = 158,720.40/x
  3. Step 3: Cross multiply
    491,144.40x = 736,716.60 × 158,720.40
  4. Step 4: Simplify right side
    491,144.40x = 116,931,953,438.64
  5. Step 5: Solve for x
    x = 116,931,953,438.64/491,144.40
  6. Step 6: Final answer
    x = 238,080.60

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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.