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Finding the Fourth Proportional to 341,126.40, 511,689.60 and 91,808.40

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Solution

The fourth proportional to 341,126.40, 511,689.60 and 91,808.40 is: 137,712.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    341,126.40 : 511,689.60 = 91,808.40 : x
  2. Step 2: Convert to fraction form
    341,126.40/511,689.60 = 91,808.40/x
  3. Step 3: Cross multiply
    341,126.40x = 511,689.60 × 91,808.40
  4. Step 4: Simplify right side
    341,126.40x = 46,977,403,472.64
  5. Step 5: Solve for x
    x = 46,977,403,472.64/341,126.40
  6. Step 6: Final answer
    x = 137,712.60

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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.