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Finding the Fourth Proportional to 253,603.69, 349,970.58 and 137,316.60

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Solution

The fourth proportional to 253,603.69, 349,970.58 and 137,316.60 is: 189,495.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,603.69 : 349,970.58 = 137,316.60 : x
  2. Step 2: Convert to fraction form
    253,603.69/349,970.58 = 137,316.60/x
  3. Step 3: Cross multiply
    253,603.69x = 349,970.58 × 137,316.60
  4. Step 4: Simplify right side
    253,603.69x = 48,056,770,145.63
  5. Step 5: Solve for x
    x = 48,056,770,145.63/253,603.69
  6. Step 6: Final answer
    x = 189,495.55

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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.