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Finding the Fourth Proportional to 213,636, 294,812.80 and 118,143.52

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Solution

The fourth proportional to 213,636, 294,812.80 and 118,143.52 is: 163,035.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,636 : 294,812.80 = 118,143.52 : x
  2. Step 2: Convert to fraction form
    213,636/294,812.80 = 118,143.52/x
  3. Step 3: Cross multiply
    213,636x = 294,812.80 × 118,143.52
  4. Step 4: Simplify right side
    213,636x = 34,830,221,933.06
  5. Step 5: Solve for x
    x = 34,830,221,933.06/213,636
  6. Step 6: Final answer
    x = 163,035.36

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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.