Home / 280,264,262.31-386,757,188.72-154,813,758.21

Finding the Fourth Proportional to 280,264,262.31, 386,757,188.72 and 154,813,758.21

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Solution

The fourth proportional to 280,264,262.31, 386,757,188.72 and 154,813,758.21 is: 213,638,847.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,264,262.31 : 386,757,188.72 = 154,813,758.21 : x
  2. Step 2: Convert to fraction form
    280,264,262.31/386,757,188.72 = 154,813,758.21/x
  3. Step 3: Cross multiply
    280,264,262.31x = 386,757,188.72 × 154,813,758.21
  4. Step 4: Simplify right side
    280,264,262.31x = 59,875,333,901,831,352
  5. Step 5: Solve for x
    x = 59,875,333,901,831,352/280,264,262.31
  6. Step 6: Final answer
    x = 213,638,847.16

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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.