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Finding the Fourth Proportional to 402,307.60, 603,922.20 and 236,189.20

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Solution

The fourth proportional to 402,307.60, 603,922.20 and 236,189.20 is: 354,554.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,307.60 : 603,922.20 = 236,189.20 : x
  2. Step 2: Convert to fraction form
    402,307.60/603,922.20 = 236,189.20/x
  3. Step 3: Cross multiply
    402,307.60x = 603,922.20 × 236,189.20
  4. Step 4: Simplify right side
    402,307.60x = 142,639,901,280.24
  5. Step 5: Solve for x
    x = 142,639,901,280.24/402,307.60
  6. Step 6: Final answer
    x = 354,554.33

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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.