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Finding the Fourth Proportional to 268,235.60, 402,353.40 and 141,702.80

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Solution

The fourth proportional to 268,235.60, 402,353.40 and 141,702.80 is: 212,554.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,235.60 : 402,353.40 = 141,702.80 : x
  2. Step 2: Convert to fraction form
    268,235.60/402,353.40 = 141,702.80/x
  3. Step 3: Cross multiply
    268,235.60x = 402,353.40 × 141,702.80
  4. Step 4: Simplify right side
    268,235.60x = 57,014,603,369.52
  5. Step 5: Solve for x
    x = 57,014,603,369.52/268,235.60
  6. Step 6: Final answer
    x = 212,554.20

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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.