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Finding the Fourth Proportional to 415,947.60, 623,921.40 and 166,808.40

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Solution

The fourth proportional to 415,947.60, 623,921.40 and 166,808.40 is: 250,212.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,947.60 : 623,921.40 = 166,808.40 : x
  2. Step 2: Convert to fraction form
    415,947.60/623,921.40 = 166,808.40/x
  3. Step 3: Cross multiply
    415,947.60x = 623,921.40 × 166,808.40
  4. Step 4: Simplify right side
    415,947.60x = 104,075,330,459.76
  5. Step 5: Solve for x
    x = 104,075,330,459.76/415,947.60
  6. Step 6: Final answer
    x = 250,212.60

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.