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Finding the Fourth Proportional to 345,880.61, 515,382.35 and 308,150.76

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Solution

The fourth proportional to 345,880.61, 515,382.35 and 308,150.76 is: 459,162.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,880.61 : 515,382.35 = 308,150.76 : x
  2. Step 2: Convert to fraction form
    345,880.61/515,382.35 = 308,150.76/x
  3. Step 3: Cross multiply
    345,880.61x = 515,382.35 × 308,150.76
  4. Step 4: Simplify right side
    345,880.61x = 158,815,462,843.09
  5. Step 5: Solve for x
    x = 158,815,462,843.09/345,880.61
  6. Step 6: Final answer
    x = 459,162.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.