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Finding the Fourth Proportional to 270,307.80, 405,467.10 and 70,615.80

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Solution

The fourth proportional to 270,307.80, 405,467.10 and 70,615.80 is: 105,925.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    270,307.80 : 405,467.10 = 70,615.80 : x
  2. Step 2: Convert to fraction form
    270,307.80/405,467.10 = 70,615.80/x
  3. Step 3: Cross multiply
    270,307.80x = 405,467.10 × 70,615.80
  4. Step 4: Simplify right side
    270,307.80x = 28,632,383,640.18
  5. Step 5: Solve for x
    x = 28,632,383,640.18/270,307.80
  6. Step 6: Final answer
    x = 105,925.11

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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.