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Finding the Fourth Proportional to 382,751.51, 574,128.81 and 155,051.43

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Solution

The fourth proportional to 382,751.51, 574,128.81 and 155,051.43 is: 232,577.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    382,751.51 : 574,128.81 = 155,051.43 : x
  2. Step 2: Convert to fraction form
    382,751.51/574,128.81 = 155,051.43/x
  3. Step 3: Cross multiply
    382,751.51x = 574,128.81 × 155,051.43
  4. Step 4: Simplify right side
    382,751.51x = 89,019,492,994.70
  5. Step 5: Solve for x
    x = 89,019,492,994.70/382,751.51
  6. Step 6: Final answer
    x = 232,577.77

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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.