Home / 280,680,804.90-387,319,847.49-163,197,800.28

Finding the Fourth Proportional to 280,680,804.90, 387,319,847.49 and 163,197,800.28

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Solution

The fourth proportional to 280,680,804.90, 387,319,847.49 and 163,197,800.28 is: 225,201,531.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,680,804.90 : 387,319,847.49 = 163,197,800.28 : x
  2. Step 2: Convert to fraction form
    280,680,804.90/387,319,847.49 = 163,197,800.28/x
  3. Step 3: Cross multiply
    280,680,804.90x = 387,319,847.49 × 163,197,800.28
  4. Step 4: Simplify right side
    280,680,804.90x = 63,209,747,115,153,080
  5. Step 5: Solve for x
    x = 63,209,747,115,153,080/280,680,804.90
  6. Step 6: Final answer
    x = 225,201,531.46

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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.