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Finding the Fourth Proportional to 328,130.15, 492,205.82 and 103,492.71

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Solution

The fourth proportional to 328,130.15, 492,205.82 and 103,492.71 is: 155,242.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,130.15 : 492,205.82 = 103,492.71 : x
  2. Step 2: Convert to fraction form
    328,130.15/492,205.82 = 103,492.71/x
  3. Step 3: Cross multiply
    328,130.15x = 492,205.82 × 103,492.71
  4. Step 4: Simplify right side
    328,130.15x = 50,939,713,672.11
  5. Step 5: Solve for x
    x = 50,939,713,672.11/328,130.15
  6. Step 6: Final answer
    x = 155,242.41

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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.