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Finding the Fourth Proportional to 245,492.88, 338,752.63 and 138,060.60

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Solution

The fourth proportional to 245,492.88, 338,752.63 and 138,060.60 is: 190,508.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,492.88 : 338,752.63 = 138,060.60 : x
  2. Step 2: Convert to fraction form
    245,492.88/338,752.63 = 138,060.60/x
  3. Step 3: Cross multiply
    245,492.88x = 338,752.63 × 138,060.60
  4. Step 4: Simplify right side
    245,492.88x = 46,768,392,157.11
  5. Step 5: Solve for x
    x = 46,768,392,157.11/245,492.88
  6. Step 6: Final answer
    x = 190,508.14

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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.