Home / 258,657.10-387,872.55-130,494.54

Finding the Fourth Proportional to 258,657.10, 387,872.55 and 130,494.54

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Solution

The fourth proportional to 258,657.10, 387,872.55 and 130,494.54 is: 195,684.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,657.10 : 387,872.55 = 130,494.54 : x
  2. Step 2: Convert to fraction form
    258,657.10/387,872.55 = 130,494.54/x
  3. Step 3: Cross multiply
    258,657.10x = 387,872.55 × 130,494.54
  4. Step 4: Simplify right side
    258,657.10x = 50,615,248,887.67
  5. Step 5: Solve for x
    x = 50,615,248,887.67/258,657.10
  6. Step 6: Final answer
    x = 195,684.74

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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.