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Finding the Fourth Proportional to 328,294.80, 492,477.84 and 103,661.28

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Solution

The fourth proportional to 328,294.80, 492,477.84 and 103,661.28 is: 155,503.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,294.80 : 492,477.84 = 103,661.28 : x
  2. Step 2: Convert to fraction form
    328,294.80/492,477.84 = 103,661.28/x
  3. Step 3: Cross multiply
    328,294.80x = 492,477.84 × 103,661.28
  4. Step 4: Simplify right side
    328,294.80x = 51,050,883,266.04
  5. Step 5: Solve for x
    x = 51,050,883,266.04/328,294.80
  6. Step 6: Final answer
    x = 155,503.17

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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.