Home / 256,659,859.20-384,989,788.80-127,287,436.80

Finding the Fourth Proportional to 256,659,859.20, 384,989,788.80 and 127,287,436.80

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Solution

The fourth proportional to 256,659,859.20, 384,989,788.80 and 127,287,436.80 is: 190,931,155.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,659,859.20 : 384,989,788.80 = 127,287,436.80 : x
  2. Step 2: Convert to fraction form
    256,659,859.20/384,989,788.80 = 127,287,436.80/x
  3. Step 3: Cross multiply
    256,659,859.20x = 384,989,788.80 × 127,287,436.80
  4. Step 4: Simplify right side
    256,659,859.20x = 49,004,363,410,525,352
  5. Step 5: Solve for x
    x = 49,004,363,410,525,352/256,659,859.20
  6. Step 6: Final answer
    x = 190,931,155.20

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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.