Home / 281,359,881.40-422,039,822.10-256,277,615.80

Finding the Fourth Proportional to 281,359,881.40, 422,039,822.10 and 256,277,615.80

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Solution

The fourth proportional to 281,359,881.40, 422,039,822.10 and 256,277,615.80 is: 384,416,423.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,359,881.40 : 422,039,822.10 = 256,277,615.80 : x
  2. Step 2: Convert to fraction form
    281,359,881.40/422,039,822.10 = 256,277,615.80/x
  3. Step 3: Cross multiply
    281,359,881.40x = 422,039,822.10 × 256,277,615.80
  4. Step 4: Simplify right side
    281,359,881.40x = 108,159,359,380,444,160
  5. Step 5: Solve for x
    x = 108,159,359,380,444,160/281,359,881.40
  6. Step 6: Final answer
    x = 384,416,423.70

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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.