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Finding the Fourth Proportional to 270,316.80, 405,480.60 and 70,624.80

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Solution

The fourth proportional to 270,316.80, 405,480.60 and 70,624.80 is: 105,938.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    270,316.80 : 405,480.60 = 70,624.80 : x
  2. Step 2: Convert to fraction form
    270,316.80/405,480.60 = 70,624.80/x
  3. Step 3: Cross multiply
    270,316.80x = 405,480.60 × 70,624.80
  4. Step 4: Simplify right side
    270,316.80x = 28,636,986,278.88
  5. Step 5: Solve for x
    x = 28,636,986,278.88/270,316.80
  6. Step 6: Final answer
    x = 105,938.61

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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.