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Finding the Fourth Proportional to 282,368.16, 389,668.73 and 155,051.96

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Solution

The fourth proportional to 282,368.16, 389,668.73 and 155,051.96 is: 213,972.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,368.16 : 389,668.73 = 155,051.96 : x
  2. Step 2: Convert to fraction form
    282,368.16/389,668.73 = 155,051.96/x
  3. Step 3: Cross multiply
    282,368.16x = 389,668.73 × 155,051.96
  4. Step 4: Simplify right side
    282,368.16x = 60,418,897,613.61
  5. Step 5: Solve for x
    x = 60,418,897,613.61/282,368.16
  6. Step 6: Final answer
    x = 213,972.06

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.