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Finding the Fourth Proportional to 328,182.67, 492,076.95 and 128,264.77

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Solution

The fourth proportional to 328,182.67, 492,076.95 and 128,264.77 is: 192,320.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,182.67 : 492,076.95 = 128,264.77 : x
  2. Step 2: Convert to fraction form
    328,182.67/492,076.95 = 128,264.77/x
  3. Step 3: Cross multiply
    328,182.67x = 492,076.95 × 128,264.77
  4. Step 4: Simplify right side
    328,182.67x = 63,116,136,814.05
  5. Step 5: Solve for x
    x = 63,116,136,814.05/328,182.67
  6. Step 6: Final answer
    x = 192,320.14

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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.