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Finding the Fourth Proportional to 385,139.60, 577,709.40 and 350,147.60

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Solution

The fourth proportional to 385,139.60, 577,709.40 and 350,147.60 is: 525,221.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,139.60 : 577,709.40 = 350,147.60 : x
  2. Step 2: Convert to fraction form
    385,139.60/577,709.40 = 350,147.60/x
  3. Step 3: Cross multiply
    385,139.60x = 577,709.40 × 350,147.60
  4. Step 4: Simplify right side
    385,139.60x = 202,283,559,907.44
  5. Step 5: Solve for x
    x = 202,283,559,907.44/385,139.60
  6. Step 6: Final answer
    x = 525,221.40

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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.