Home / 258,771.28-357,018.96-210,942.40

Finding the Fourth Proportional to 258,771.28, 357,018.96 and 210,942.40

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Solution

The fourth proportional to 258,771.28, 357,018.96 and 210,942.40 is: 291,030.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,771.28 : 357,018.96 = 210,942.40 : x
  2. Step 2: Convert to fraction form
    258,771.28/357,018.96 = 210,942.40/x
  3. Step 3: Cross multiply
    258,771.28x = 357,018.96 × 210,942.40
  4. Step 4: Simplify right side
    258,771.28x = 75,310,436,267.90
  5. Step 5: Solve for x
    x = 75,310,436,267.90/258,771.28
  6. Step 6: Final answer
    x = 291,030.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.