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Finding the Fourth Proportional to 611,338.60, 917,048.40 and 162,053.20

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Solution

The fourth proportional to 611,338.60, 917,048.40 and 162,053.20 is: 243,090.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,338.60 : 917,048.40 = 162,053.20 : x
  2. Step 2: Convert to fraction form
    611,338.60/917,048.40 = 162,053.20/x
  3. Step 3: Cross multiply
    611,338.60x = 917,048.40 × 162,053.20
  4. Step 4: Simplify right side
    611,338.60x = 148,610,627,774.88
  5. Step 5: Solve for x
    x = 148,610,627,774.88/611,338.60
  6. Step 6: Final answer
    x = 243,090.54

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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.