Home / 260,235.73-390,087.69-147,678.25

Finding the Fourth Proportional to 260,235.73, 390,087.69 and 147,678.25

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Solution

The fourth proportional to 260,235.73, 390,087.69 and 147,678.25 is: 221,366.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,235.73 : 390,087.69 = 147,678.25 : x
  2. Step 2: Convert to fraction form
    260,235.73/390,087.69 = 147,678.25/x
  3. Step 3: Cross multiply
    260,235.73x = 390,087.69 × 147,678.25
  4. Step 4: Simplify right side
    260,235.73x = 57,607,467,405.74
  5. Step 5: Solve for x
    x = 57,607,467,405.74/260,235.73
  6. Step 6: Final answer
    x = 221,366.48

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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.