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Finding the Fourth Proportional to 354,947.40, 532,566.90 and 130,415.40

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Solution

The fourth proportional to 354,947.40, 532,566.90 and 130,415.40 is: 195,676.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,947.40 : 532,566.90 = 130,415.40 : x
  2. Step 2: Convert to fraction form
    354,947.40/532,566.90 = 130,415.40/x
  3. Step 3: Cross multiply
    354,947.40x = 532,566.90 × 130,415.40
  4. Step 4: Simplify right side
    354,947.40x = 69,454,925,290.26
  5. Step 5: Solve for x
    x = 69,454,925,290.26/354,947.40
  6. Step 6: Final answer
    x = 195,676.67

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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.