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Finding the Fourth Proportional to 296,876.40, 445,368.60 and 97,141.20

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Solution

The fourth proportional to 296,876.40, 445,368.60 and 97,141.20 is: 145,729.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    296,876.40 : 445,368.60 = 97,141.20 : x
  2. Step 2: Convert to fraction form
    296,876.40/445,368.60 = 97,141.20/x
  3. Step 3: Cross multiply
    296,876.40x = 445,368.60 × 97,141.20
  4. Step 4: Simplify right side
    296,876.40x = 43,263,640,246.32
  5. Step 5: Solve for x
    x = 43,263,640,246.32/296,876.40
  6. Step 6: Final answer
    x = 145,729.47

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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.