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Finding the Fourth Proportional to 481,702.40, 721,862.40 and 354,348.80

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Solution

The fourth proportional to 481,702.40, 721,862.40 and 354,348.80 is: 531,014.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    481,702.40 : 721,862.40 = 354,348.80 : x
  2. Step 2: Convert to fraction form
    481,702.40/721,862.40 = 354,348.80/x
  3. Step 3: Cross multiply
    481,702.40x = 721,862.40 × 354,348.80
  4. Step 4: Simplify right side
    481,702.40x = 255,791,075,205.12
  5. Step 5: Solve for x
    x = 255,791,075,205.12/481,702.40
  6. Step 6: Final answer
    x = 531,014.74

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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.