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Finding the Fourth Proportional to 328,301.76, 492,364.98 and 91,602.84

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Solution

The fourth proportional to 328,301.76, 492,364.98 and 91,602.84 is: 137,379.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,301.76 : 492,364.98 = 91,602.84 : x
  2. Step 2: Convert to fraction form
    328,301.76/492,364.98 = 91,602.84/x
  3. Step 3: Cross multiply
    328,301.76x = 492,364.98 × 91,602.84
  4. Step 4: Simplify right side
    328,301.76x = 45,102,030,484.54
  5. Step 5: Solve for x
    x = 45,102,030,484.54/328,301.76
  6. Step 6: Final answer
    x = 137,379.80

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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.