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Finding the Fourth Proportional to 438,906.40, 605,690.84 and 237,702.40

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Solution

The fourth proportional to 438,906.40, 605,690.84 and 237,702.40 is: 328,029.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,906.40 : 605,690.84 = 237,702.40 : x
  2. Step 2: Convert to fraction form
    438,906.40/605,690.84 = 237,702.40/x
  3. Step 3: Cross multiply
    438,906.40x = 605,690.84 × 237,702.40
  4. Step 4: Simplify right side
    438,906.40x = 143,974,166,326.02
  5. Step 5: Solve for x
    x = 143,974,166,326.02/438,906.40
  6. Step 6: Final answer
    x = 328,029.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.