Home / 221,263.90-305,265.45-130,574.49

Finding the Fourth Proportional to 221,263.90, 305,265.45 and 130,574.49

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Solution

The fourth proportional to 221,263.90, 305,265.45 and 130,574.49 is: 180,146.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,263.90 : 305,265.45 = 130,574.49 : x
  2. Step 2: Convert to fraction form
    221,263.90/305,265.45 = 130,574.49/x
  3. Step 3: Cross multiply
    221,263.90x = 305,265.45 × 130,574.49
  4. Step 4: Simplify right side
    221,263.90x = 39,859,880,448.37
  5. Step 5: Solve for x
    x = 39,859,880,448.37/221,263.90
  6. Step 6: Final answer
    x = 180,146.33

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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.