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Finding the Fourth Proportional to 371,859.20, 557,788.80 and 346,198.40

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Solution

The fourth proportional to 371,859.20, 557,788.80 and 346,198.40 is: 519,297.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,859.20 : 557,788.80 = 346,198.40 : x
  2. Step 2: Convert to fraction form
    371,859.20/557,788.80 = 346,198.40/x
  3. Step 3: Cross multiply
    371,859.20x = 557,788.80 × 346,198.40
  4. Step 4: Simplify right side
    371,859.20x = 193,105,590,097.92
  5. Step 5: Solve for x
    x = 193,105,590,097.92/371,859.20
  6. Step 6: Final answer
    x = 519,297.60

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1.5x scale

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.