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Finding the Fourth Proportional to 340,374.36, 510,495.66 and 129,962.28

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Solution

The fourth proportional to 340,374.36, 510,495.66 and 129,962.28 is: 194,918.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,374.36 : 510,495.66 = 129,962.28 : x
  2. Step 2: Convert to fraction form
    340,374.36/510,495.66 = 129,962.28/x
  3. Step 3: Cross multiply
    340,374.36x = 510,495.66 × 129,962.28
  4. Step 4: Simplify right side
    340,374.36x = 66,345,179,903.70
  5. Step 5: Solve for x
    x = 66,345,179,903.70/340,374.36
  6. Step 6: Final answer
    x = 194,918.27

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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.