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Finding the Fourth Proportional to 275,574.42, 380,289.47 and 154,712.70

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Solution

The fourth proportional to 275,574.42, 380,289.47 and 154,712.70 is: 213,501.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,574.42 : 380,289.47 = 154,712.70 : x
  2. Step 2: Convert to fraction form
    275,574.42/380,289.47 = 154,712.70/x
  3. Step 3: Cross multiply
    275,574.42x = 380,289.47 × 154,712.70
  4. Step 4: Simplify right side
    275,574.42x = 58,835,609,911.71
  5. Step 5: Solve for x
    x = 58,835,609,911.71/275,574.42
  6. Step 6: Final answer
    x = 213,501.71

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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.