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Finding the Fourth Proportional to 319,315.60, 440,658.60 and 176,080.72

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Solution

The fourth proportional to 319,315.60, 440,658.60 and 176,080.72 is: 242,993.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,315.60 : 440,658.60 = 176,080.72 : x
  2. Step 2: Convert to fraction form
    319,315.60/440,658.60 = 176,080.72/x
  3. Step 3: Cross multiply
    319,315.60x = 440,658.60 × 176,080.72
  4. Step 4: Simplify right side
    319,315.60x = 77,591,483,562.19
  5. Step 5: Solve for x
    x = 77,591,483,562.19/319,315.60
  6. Step 6: Final answer
    x = 242,993.09

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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.