Home / 259,964.20-390,075.90-147,730.60

Finding the Fourth Proportional to 259,964.20, 390,075.90 and 147,730.60

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Solution

The fourth proportional to 259,964.20, 390,075.90 and 147,730.60 is: 221,669.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,964.20 : 390,075.90 = 147,730.60 : x
  2. Step 2: Convert to fraction form
    259,964.20/390,075.90 = 147,730.60/x
  3. Step 3: Cross multiply
    259,964.20x = 390,075.90 × 147,730.60
  4. Step 4: Simplify right side
    259,964.20x = 57,626,146,752.54
  5. Step 5: Solve for x
    x = 57,626,146,752.54/259,964.20
  6. Step 6: Final answer
    x = 221,669.55

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.