Home / 258,622.32-387,429.10-145,961.75

Finding the Fourth Proportional to 258,622.32, 387,429.10 and 145,961.75

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Solution

The fourth proportional to 258,622.32, 387,429.10 and 145,961.75 is: 218,657.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,622.32 : 387,429.10 = 145,961.75 : x
  2. Step 2: Convert to fraction form
    258,622.32/387,429.10 = 145,961.75/x
  3. Step 3: Cross multiply
    258,622.32x = 387,429.10 × 145,961.75
  4. Step 4: Simplify right side
    258,622.32x = 56,549,828,271.82
  5. Step 5: Solve for x
    x = 56,549,828,271.82/258,622.32
  6. Step 6: Final answer
    x = 218,657.96

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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.