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Finding the Fourth Proportional to 205,775.60, 308,663.40 and 65,548.40

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Solution

The fourth proportional to 205,775.60, 308,663.40 and 65,548.40 is: 98,322.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,775.60 : 308,663.40 = 65,548.40 : x
  2. Step 2: Convert to fraction form
    205,775.60/308,663.40 = 65,548.40/x
  3. Step 3: Cross multiply
    205,775.60x = 308,663.40 × 65,548.40
  4. Step 4: Simplify right side
    205,775.60x = 20,232,392,008.56
  5. Step 5: Solve for x
    x = 20,232,392,008.56/205,775.60
  6. Step 6: Final answer
    x = 98,322.60

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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.