Home / 256,536,005.20-384,804,007.80-74,789,112.40

Finding the Fourth Proportional to 256,536,005.20, 384,804,007.80 and 74,789,112.40

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Solution

The fourth proportional to 256,536,005.20, 384,804,007.80 and 74,789,112.40 is: 112,183,668.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,536,005.20 : 384,804,007.80 = 74,789,112.40 : x
  2. Step 2: Convert to fraction form
    256,536,005.20/384,804,007.80 = 74,789,112.40/x
  3. Step 3: Cross multiply
    256,536,005.20x = 384,804,007.80 × 74,789,112.40
  4. Step 4: Simplify right side
    256,536,005.20x = 28,779,150,191,324,680
  5. Step 5: Solve for x
    x = 28,779,150,191,324,680/256,536,005.20
  6. Step 6: Final answer
    x = 112,183,668.60

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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.