Home / 315,416.03-435,430.25-194,623.88

Finding the Fourth Proportional to 315,416.03, 435,430.25 and 194,623.88

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Solution

The fourth proportional to 315,416.03, 435,430.25 and 194,623.88 is: 268,677.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,416.03 : 435,430.25 = 194,623.88 : x
  2. Step 2: Convert to fraction form
    315,416.03/435,430.25 = 194,623.88/x
  3. Step 3: Cross multiply
    315,416.03x = 435,430.25 × 194,623.88
  4. Step 4: Simplify right side
    315,416.03x = 84,745,123,033.78
  5. Step 5: Solve for x
    x = 84,745,123,033.78/315,416.03
  6. Step 6: Final answer
    x = 268,677.28

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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.