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Finding the Fourth Proportional to 262,805.60, 393,916.80 and 113,020.40

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Solution

The fourth proportional to 262,805.60, 393,916.80 and 113,020.40 is: 169,405.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,805.60 : 393,916.80 = 113,020.40 : x
  2. Step 2: Convert to fraction form
    262,805.60/393,916.80 = 113,020.40/x
  3. Step 3: Cross multiply
    262,805.60x = 393,916.80 × 113,020.40
  4. Step 4: Simplify right side
    262,805.60x = 44,520,634,302.72
  5. Step 5: Solve for x
    x = 44,520,634,302.72/262,805.60
  6. Step 6: Final answer
    x = 169,405.20

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1.5x scale

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.