Home / 259,075.20-388,612.80-148,278.40

Finding the Fourth Proportional to 259,075.20, 388,612.80 and 148,278.40

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Solution

The fourth proportional to 259,075.20, 388,612.80 and 148,278.40 is: 222,417.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,075.20 : 388,612.80 = 148,278.40 : x
  2. Step 2: Convert to fraction form
    259,075.20/388,612.80 = 148,278.40/x
  3. Step 3: Cross multiply
    259,075.20x = 388,612.80 × 148,278.40
  4. Step 4: Simplify right side
    259,075.20x = 57,622,884,203.52
  5. Step 5: Solve for x
    x = 57,622,884,203.52/259,075.20
  6. Step 6: Final answer
    x = 222,417.60

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1.5x scale

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.