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Finding the Fourth Proportional to 395,090.40, 592,635.60 and 99,602.40

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Solution

The fourth proportional to 395,090.40, 592,635.60 and 99,602.40 is: 149,403.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,090.40 : 592,635.60 = 99,602.40 : x
  2. Step 2: Convert to fraction form
    395,090.40/592,635.60 = 99,602.40/x
  3. Step 3: Cross multiply
    395,090.40x = 592,635.60 × 99,602.40
  4. Step 4: Simplify right side
    395,090.40x = 59,027,928,085.44
  5. Step 5: Solve for x
    x = 59,027,928,085.44/395,090.40
  6. Step 6: Final answer
    x = 149,403.60

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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.