Home / 289,120.23-431,562.85-255,032.55

Finding the Fourth Proportional to 289,120.23, 431,562.85 and 255,032.55

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Solution

The fourth proportional to 289,120.23, 431,562.85 and 255,032.55 is: 380,680.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,120.23 : 431,562.85 = 255,032.55 : x
  2. Step 2: Convert to fraction form
    289,120.23/431,562.85 = 255,032.55/x
  3. Step 3: Cross multiply
    289,120.23x = 431,562.85 × 255,032.55
  4. Step 4: Simplify right side
    289,120.23x = 110,062,573,483.19
  5. Step 5: Solve for x
    x = 110,062,573,483.19/289,120.23
  6. Step 6: Final answer
    x = 380,680.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.