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Finding the Fourth Proportional to 340,962.40, 511,442.88 and 91,644.40

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Solution

The fourth proportional to 340,962.40, 511,442.88 and 91,644.40 is: 137,466.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,962.40 : 511,442.88 = 91,644.40 : x
  2. Step 2: Convert to fraction form
    340,962.40/511,442.88 = 91,644.40/x
  3. Step 3: Cross multiply
    340,962.40x = 511,442.88 × 91,644.40
  4. Step 4: Simplify right side
    340,962.40x = 46,870,875,871.87
  5. Step 5: Solve for x
    x = 46,870,875,871.87/340,962.40
  6. Step 6: Final answer
    x = 137,466.41

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1.5x scale

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.