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Finding the Fourth Proportional to 436,168.80, 601,376.40 and 355,298.40

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Solution

The fourth proportional to 436,168.80, 601,376.40 and 355,298.40 is: 489,874.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    436,168.80 : 601,376.40 = 355,298.40 : x
  2. Step 2: Convert to fraction form
    436,168.80/601,376.40 = 355,298.40/x
  3. Step 3: Cross multiply
    436,168.80x = 601,376.40 × 355,298.40
  4. Step 4: Simplify right side
    436,168.80x = 213,668,072,717.76
  5. Step 5: Solve for x
    x = 213,668,072,717.76/436,168.80
  6. Step 6: Final answer
    x = 489,874.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.