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Finding the Fourth Proportional to 328,645.56, 453,424.86 and 259,515.60

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Solution

The fourth proportional to 328,645.56, 453,424.86 and 259,515.60 is: 358,047.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,645.56 : 453,424.86 = 259,515.60 : x
  2. Step 2: Convert to fraction form
    328,645.56/453,424.86 = 259,515.60/x
  3. Step 3: Cross multiply
    328,645.56x = 453,424.86 × 259,515.60
  4. Step 4: Simplify right side
    328,645.56x = 117,670,824,597.82
  5. Step 5: Solve for x
    x = 117,670,824,597.82/328,645.56
  6. Step 6: Final answer
    x = 358,047.81

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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.