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Finding the Fourth Proportional to 611,308.60, 917,003.40 and 162,023.20

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Solution

The fourth proportional to 611,308.60, 917,003.40 and 162,023.20 is: 243,045.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,308.60 : 917,003.40 = 162,023.20 : x
  2. Step 2: Convert to fraction form
    611,308.60/917,003.40 = 162,023.20/x
  3. Step 3: Cross multiply
    611,308.60x = 917,003.40 × 162,023.20
  4. Step 4: Simplify right side
    611,308.60x = 148,575,825,278.88
  5. Step 5: Solve for x
    x = 148,575,825,278.88/611,308.60
  6. Step 6: Final answer
    x = 243,045.53

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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.