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Finding the Fourth Proportional to 188,640.48, 282,970.80 and 48,400.32

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Solution

The fourth proportional to 188,640.48, 282,970.80 and 48,400.32 is: 72,603.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,640.48 : 282,970.80 = 48,400.32 : x
  2. Step 2: Convert to fraction form
    188,640.48/282,970.80 = 48,400.32/x
  3. Step 3: Cross multiply
    188,640.48x = 282,970.80 × 48,400.32
  4. Step 4: Simplify right side
    188,640.48x = 13,695,877,270.66
  5. Step 5: Solve for x
    x = 13,695,877,270.66/188,640.48
  6. Step 6: Final answer
    x = 72,603.07

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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.