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Finding the Fourth Proportional to 611,166.40, 843,387.36 and 339,246.40

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Solution

The fourth proportional to 611,166.40, 843,387.36 and 339,246.40 is: 468,147.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,166.40 : 843,387.36 = 339,246.40 : x
  2. Step 2: Convert to fraction form
    611,166.40/843,387.36 = 339,246.40/x
  3. Step 3: Cross multiply
    611,166.40x = 843,387.36 × 339,246.40
  4. Step 4: Simplify right side
    611,166.40x = 286,116,125,685.50
  5. Step 5: Solve for x
    x = 286,116,125,685.50/611,166.40
  6. Step 6: Final answer
    x = 468,147.67

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.