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Finding the Fourth Proportional to 209,907.88, 289,509.06 and 134,463.40

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Solution

The fourth proportional to 209,907.88, 289,509.06 and 134,463.40 is: 185,454.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,907.88 : 289,509.06 = 134,463.40 : x
  2. Step 2: Convert to fraction form
    209,907.88/289,509.06 = 134,463.40/x
  3. Step 3: Cross multiply
    209,907.88x = 289,509.06 × 134,463.40
  4. Step 4: Simplify right side
    209,907.88x = 38,928,372,538.40
  5. Step 5: Solve for x
    x = 38,928,372,538.40/209,907.88
  6. Step 6: Final answer
    x = 185,454.56

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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.