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Finding the Fourth Proportional to 275,758.90, 380,547.50 and 154,900.28

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Solution

The fourth proportional to 275,758.90, 380,547.50 and 154,900.28 is: 213,762.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,758.90 : 380,547.50 = 154,900.28 : x
  2. Step 2: Convert to fraction form
    275,758.90/380,547.50 = 154,900.28/x
  3. Step 3: Cross multiply
    275,758.90x = 380,547.50 × 154,900.28
  4. Step 4: Simplify right side
    275,758.90x = 58,946,914,480.17
  5. Step 5: Solve for x
    x = 58,946,914,480.17/275,758.90
  6. Step 6: Final answer
    x = 213,762.51

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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.