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Finding the Fourth Proportional to 265,736,509.20, 398,604,763.80 and 254,257,383.60

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Solution

The fourth proportional to 265,736,509.20, 398,604,763.80 and 254,257,383.60 is: 381,386,075.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,736,509.20 : 398,604,763.80 = 254,257,383.60 : x
  2. Step 2: Convert to fraction form
    265,736,509.20/398,604,763.80 = 254,257,383.60/x
  3. Step 3: Cross multiply
    265,736,509.20x = 398,604,763.80 × 254,257,383.60
  4. Step 4: Simplify right side
    265,736,509.20x = 101,348,204,334,284,000
  5. Step 5: Solve for x
    x = 101,348,204,334,284,000/265,736,509.20
  6. Step 6: Final answer
    x = 381,386,075.40

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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.