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Finding the Fourth Proportional to 213,181.60, 319,378.80 and 124,477.60

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Solution

The fourth proportional to 213,181.60, 319,378.80 and 124,477.60 is: 186,486.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,181.60 : 319,378.80 = 124,477.60 : x
  2. Step 2: Convert to fraction form
    213,181.60/319,378.80 = 124,477.60/x
  3. Step 3: Cross multiply
    213,181.60x = 319,378.80 × 124,477.60
  4. Step 4: Simplify right side
    213,181.60x = 39,755,506,514.88
  5. Step 5: Solve for x
    x = 39,755,506,514.88/213,181.60
  6. Step 6: Final answer
    x = 186,486.58

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1.5x scale

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.