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Finding the Fourth Proportional to 275,453.99, 380,145.34 and 152,952.70

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Solution

The fourth proportional to 275,453.99, 380,145.34 and 152,952.70 is: 211,085.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,453.99 : 380,145.34 = 152,952.70 : x
  2. Step 2: Convert to fraction form
    275,453.99/380,145.34 = 152,952.70/x
  3. Step 3: Cross multiply
    275,453.99x = 380,145.34 × 152,952.70
  4. Step 4: Simplify right side
    275,453.99x = 58,144,254,812.67
  5. Step 5: Solve for x
    x = 58,144,254,812.67/275,453.99
  6. Step 6: Final answer
    x = 211,085.18

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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.