Home / 213,765.04-294,949.80-128,880.28

Finding the Fourth Proportional to 213,765.04, 294,949.80 and 128,880.28

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Solution

The fourth proportional to 213,765.04, 294,949.80 and 128,880.28 is: 177,827.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,765.04 : 294,949.80 = 128,880.28 : x
  2. Step 2: Convert to fraction form
    213,765.04/294,949.80 = 128,880.28/x
  3. Step 3: Cross multiply
    213,765.04x = 294,949.80 × 128,880.28
  4. Step 4: Simplify right side
    213,765.04x = 38,013,212,809.94
  5. Step 5: Solve for x
    x = 38,013,212,809.94/213,765.04
  6. Step 6: Final answer
    x = 177,827.08

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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.