Home / 280,680,762.90-387,319,789.47-163,197,758.25

Finding the Fourth Proportional to 280,680,762.90, 387,319,789.47 and 163,197,758.25

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Solution

The fourth proportional to 280,680,762.90, 387,319,789.47 and 163,197,758.25 is: 225,201,473.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,680,762.90 : 387,319,789.47 = 163,197,758.25 : x
  2. Step 2: Convert to fraction form
    280,680,762.90/387,319,789.47 = 163,197,758.25/x
  3. Step 3: Cross multiply
    280,680,762.90x = 387,319,789.47 × 163,197,758.25
  4. Step 4: Simplify right side
    280,680,762.90x = 63,209,721,367,365,960
  5. Step 5: Solve for x
    x = 63,209,721,367,365,960/280,680,762.90
  6. Step 6: Final answer
    x = 225,201,473.43

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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.