Home / 309,826.80-464,740.20-191,631.60

Finding the Fourth Proportional to 309,826.80, 464,740.20 and 191,631.60

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Solution

The fourth proportional to 309,826.80, 464,740.20 and 191,631.60 is: 287,447.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,826.80 : 464,740.20 = 191,631.60 : x
  2. Step 2: Convert to fraction form
    309,826.80/464,740.20 = 191,631.60/x
  3. Step 3: Cross multiply
    309,826.80x = 464,740.20 × 191,631.60
  4. Step 4: Simplify right side
    309,826.80x = 89,058,908,110.32
  5. Step 5: Solve for x
    x = 89,058,908,110.32/309,826.80
  6. Step 6: Final answer
    x = 287,447.40

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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.