Home / 318,889,908.72-440,068,077.36-172,212,192.72

Finding the Fourth Proportional to 318,889,908.72, 440,068,077.36 and 172,212,192.72

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Solution

The fourth proportional to 318,889,908.72, 440,068,077.36 and 172,212,192.72 is: 237,652,827.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,889,908.72 : 440,068,077.36 = 172,212,192.72 : x
  2. Step 2: Convert to fraction form
    318,889,908.72/440,068,077.36 = 172,212,192.72/x
  3. Step 3: Cross multiply
    318,889,908.72x = 440,068,077.36 × 172,212,192.72
  4. Step 4: Simplify right side
    318,889,908.72x = 75,785,088,548,240,192
  5. Step 5: Solve for x
    x = 75,785,088,548,240,192/318,889,908.72
  6. Step 6: Final answer
    x = 237,652,827.75

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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.