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Finding the Fourth Proportional to 392,552,700.72, 541,722,730.04 and 216,340,698.06

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Solution

The fourth proportional to 392,552,700.72, 541,722,730.04 and 216,340,698.06 is: 298,550,165.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,552,700.72 : 541,722,730.04 = 216,340,698.06 : x
  2. Step 2: Convert to fraction form
    392,552,700.72/541,722,730.04 = 216,340,698.06/x
  3. Step 3: Cross multiply
    392,552,700.72x = 541,722,730.04 × 216,340,698.06
  4. Step 4: Simplify right side
    392,552,700.72x = 117,196,673,573,583,584
  5. Step 5: Solve for x
    x = 117,196,673,573,583,584/392,552,700.72
  6. Step 6: Final answer
    x = 298,550,165.01

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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.