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Finding the Fourth Proportional to 210,895,818.36, 291,032,978.58 and 118,079,647.71

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Solution

The fourth proportional to 210,895,818.36, 291,032,978.58 and 118,079,647.71 is: 162,948,093.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,895,818.36 : 291,032,978.58 = 118,079,647.71 : x
  2. Step 2: Convert to fraction form
    210,895,818.36/291,032,978.58 = 118,079,647.71/x
  3. Step 3: Cross multiply
    210,895,818.36x = 291,032,978.58 × 118,079,647.71
  4. Step 4: Simplify right side
    210,895,818.36x = 34,365,071,582,718,372
  5. Step 5: Solve for x
    x = 34,365,071,582,718,372/210,895,818.36
  6. Step 6: Final answer
    x = 162,948,093.76

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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.