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Finding the Fourth Proportional to 328,210.69, 492,272.25 and 91,533.55

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Solution

The fourth proportional to 328,210.69, 492,272.25 and 91,533.55 is: 137,288.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,210.69 : 492,272.25 = 91,533.55 : x
  2. Step 2: Convert to fraction form
    328,210.69/492,272.25 = 91,533.55/x
  3. Step 3: Cross multiply
    328,210.69x = 492,272.25 × 91,533.55
  4. Step 4: Simplify right side
    328,210.69x = 45,059,426,608.99
  5. Step 5: Solve for x
    x = 45,059,426,608.99/328,210.69
  6. Step 6: Final answer
    x = 137,288.11

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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.