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Finding the Fourth Proportional to 409,603.40, 614,405.10 and 114,115.40

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Solution

The fourth proportional to 409,603.40, 614,405.10 and 114,115.40 is: 171,173.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    409,603.40 : 614,405.10 = 114,115.40 : x
  2. Step 2: Convert to fraction form
    409,603.40/614,405.10 = 114,115.40/x
  3. Step 3: Cross multiply
    409,603.40x = 614,405.10 × 114,115.40
  4. Step 4: Simplify right side
    409,603.40x = 70,113,083,748.54
  5. Step 5: Solve for x
    x = 70,113,083,748.54/409,603.40
  6. Step 6: Final answer
    x = 171,173.10

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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.