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Finding the Fourth Proportional to 591,709.60, 887,564.40 and 217,878.40

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Solution

The fourth proportional to 591,709.60, 887,564.40 and 217,878.40 is: 326,817.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    591,709.60 : 887,564.40 = 217,878.40 : x
  2. Step 2: Convert to fraction form
    591,709.60/887,564.40 = 217,878.40/x
  3. Step 3: Cross multiply
    591,709.60x = 887,564.40 × 217,878.40
  4. Step 4: Simplify right side
    591,709.60x = 193,381,111,368.96
  5. Step 5: Solve for x
    x = 193,381,111,368.96/591,709.60
  6. Step 6: Final answer
    x = 326,817.60

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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.