Home / 256,535,999.20-384,803,998.80-74,789,106.40

Finding the Fourth Proportional to 256,535,999.20, 384,803,998.80 and 74,789,106.40

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Solution

The fourth proportional to 256,535,999.20, 384,803,998.80 and 74,789,106.40 is: 112,183,659.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,535,999.20 : 384,803,998.80 = 74,789,106.40 : x
  2. Step 2: Convert to fraction form
    256,535,999.20/384,803,998.80 = 74,789,106.40/x
  3. Step 3: Cross multiply
    256,535,999.20x = 384,803,998.80 × 74,789,106.40
  4. Step 4: Simplify right side
    256,535,999.20x = 28,779,147,209,398,676
  5. Step 5: Solve for x
    x = 28,779,147,209,398,676/256,535,999.20
  6. Step 6: Final answer
    x = 112,183,659.60

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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.