Home / 353,074.70-529,445.18-128,278.38

Finding the Fourth Proportional to 353,074.70, 529,445.18 and 128,278.38

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Solution

The fourth proportional to 353,074.70, 529,445.18 and 128,278.38 is: 192,356.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,074.70 : 529,445.18 = 128,278.38 : x
  2. Step 2: Convert to fraction form
    353,074.70/529,445.18 = 128,278.38/x
  3. Step 3: Cross multiply
    353,074.70x = 529,445.18 × 128,278.38
  4. Step 4: Simplify right side
    353,074.70x = 67,916,369,989.21
  5. Step 5: Solve for x
    x = 67,916,369,989.21/353,074.70
  6. Step 6: Final answer
    x = 192,356.94

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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.