Home / 280,546,985.88-387,166,797.12-156,787,659.36

Finding the Fourth Proportional to 280,546,985.88, 387,166,797.12 and 156,787,659.36

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Solution

The fourth proportional to 280,546,985.88, 387,166,797.12 and 156,787,659.36 is: 216,373,652.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,546,985.88 : 387,166,797.12 = 156,787,659.36 : x
  2. Step 2: Convert to fraction form
    280,546,985.88/387,166,797.12 = 156,787,659.36/x
  3. Step 3: Cross multiply
    280,546,985.88x = 387,166,797.12 × 156,787,659.36
  4. Step 4: Simplify right side
    280,546,985.88x = 60,702,975,902,352,792
  5. Step 5: Solve for x
    x = 60,702,975,902,352,792/280,546,985.88
  6. Step 6: Final answer
    x = 216,373,652.04

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.