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Finding the Fourth Proportional to 402,740.60, 603,419.70 and 191,924.60

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Solution

The fourth proportional to 402,740.60, 603,419.70 and 191,924.60 is: 287,557.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,740.60 : 603,419.70 = 191,924.60 : x
  2. Step 2: Convert to fraction form
    402,740.60/603,419.70 = 191,924.60/x
  3. Step 3: Cross multiply
    402,740.60x = 603,419.70 × 191,924.60
  4. Step 4: Simplify right side
    402,740.60x = 115,811,084,554.62
  5. Step 5: Solve for x
    x = 115,811,084,554.62/402,740.60
  6. Step 6: Final answer
    x = 287,557.51

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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.