Home / 309,623.20-464,434.80-190,909.60

Finding the Fourth Proportional to 309,623.20, 464,434.80 and 190,909.60

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Solution

The fourth proportional to 309,623.20, 464,434.80 and 190,909.60 is: 286,364.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,623.20 : 464,434.80 = 190,909.60 : x
  2. Step 2: Convert to fraction form
    309,623.20/464,434.80 = 190,909.60/x
  3. Step 3: Cross multiply
    309,623.20x = 464,434.80 × 190,909.60
  4. Step 4: Simplify right side
    309,623.20x = 88,665,061,894.08
  5. Step 5: Solve for x
    x = 88,665,061,894.08/309,623.20
  6. Step 6: Final answer
    x = 286,364.40

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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.