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Finding the Fourth Proportional to 210,036,672.70, 315,055,009.05 and 210,036,672.70

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Solution

The fourth proportional to 210,036,672.70, 315,055,009.05 and 210,036,672.70 is: 315,055,009.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,036,672.70 : 315,055,009.05 = 210,036,672.70 : x
  2. Step 2: Convert to fraction form
    210,036,672.70/315,055,009.05 = 210,036,672.70/x
  3. Step 3: Cross multiply
    210,036,672.70x = 315,055,009.05 × 210,036,672.70
  4. Step 4: Simplify right side
    210,036,672.70x = 66,173,105,818,330,384
  5. Step 5: Solve for x
    x = 66,173,105,818,330,384/210,036,672.70
  6. Step 6: Final answer
    x = 315,055,009.05

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.