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Finding the Fourth Proportional to 210,374.66, 290,341.86 and 118,496.94

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Solution

The fourth proportional to 210,374.66, 290,341.86 and 118,496.94 is: 163,539.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,374.66 : 290,341.86 = 118,496.94 : x
  2. Step 2: Convert to fraction form
    210,374.66/290,341.86 = 118,496.94/x
  3. Step 3: Cross multiply
    210,374.66x = 290,341.86 × 118,496.94
  4. Step 4: Simplify right side
    210,374.66x = 34,404,621,963.91
  5. Step 5: Solve for x
    x = 34,404,621,963.91/210,374.66
  6. Step 6: Final answer
    x = 163,539.76

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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.