Home / 312,623.04-431,393.52-176,668.80

Finding the Fourth Proportional to 312,623.04, 431,393.52 and 176,668.80

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Solution

The fourth proportional to 312,623.04, 431,393.52 and 176,668.80 is: 243,788.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,623.04 : 431,393.52 = 176,668.80 : x
  2. Step 2: Convert to fraction form
    312,623.04/431,393.52 = 176,668.80/x
  3. Step 3: Cross multiply
    312,623.04x = 431,393.52 × 176,668.80
  4. Step 4: Simplify right side
    312,623.04x = 76,213,775,506.18
  5. Step 5: Solve for x
    x = 76,213,775,506.18/312,623.04
  6. Step 6: Final answer
    x = 243,788.10

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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.