Home / 309,964.60-464,946.90-99,623.80

Finding the Fourth Proportional to 309,964.60, 464,946.90 and 99,623.80

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Solution

The fourth proportional to 309,964.60, 464,946.90 and 99,623.80 is: 149,435.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,964.60 : 464,946.90 = 99,623.80 : x
  2. Step 2: Convert to fraction form
    309,964.60/464,946.90 = 99,623.80/x
  3. Step 3: Cross multiply
    309,964.60x = 464,946.90 × 99,623.80
  4. Step 4: Simplify right side
    309,964.60x = 46,319,776,976.22
  5. Step 5: Solve for x
    x = 46,319,776,976.22/309,964.60
  6. Step 6: Final answer
    x = 149,435.70

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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.