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Finding the Fourth Proportional to 272,907.20, 408,923.40 and 172,888.40

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Solution

The fourth proportional to 272,907.20, 408,923.40 and 172,888.40 is: 259,055.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,907.20 : 408,923.40 = 172,888.40 : x
  2. Step 2: Convert to fraction form
    272,907.20/408,923.40 = 172,888.40/x
  3. Step 3: Cross multiply
    272,907.20x = 408,923.40 × 172,888.40
  4. Step 4: Simplify right side
    272,907.20x = 70,698,112,348.56
  5. Step 5: Solve for x
    x = 70,698,112,348.56/272,907.20
  6. Step 6: Final answer
    x = 259,055.50

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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.