Home / 280,680,855.92-387,319,917.84-163,197,851.28

Finding the Fourth Proportional to 280,680,855.92, 387,319,917.84 and 163,197,851.28

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Solution

The fourth proportional to 280,680,855.92, 387,319,917.84 and 163,197,851.28 is: 225,201,601.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,680,855.92 : 387,319,917.84 = 163,197,851.28 : x
  2. Step 2: Convert to fraction form
    280,680,855.92/387,319,917.84 = 163,197,851.28/x
  3. Step 3: Cross multiply
    280,680,855.92x = 387,319,917.84 × 163,197,851.28
  4. Step 4: Simplify right side
    280,680,855.92x = 63,209,778,349,434,136
  5. Step 5: Solve for x
    x = 63,209,778,349,434,136/280,680,855.92
  6. Step 6: Final answer
    x = 225,201,601.81

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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.