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Finding the Fourth Proportional to 216,703.48, 299,051.57 and 121,204.07

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Solution

The fourth proportional to 216,703.48, 299,051.57 and 121,204.07 is: 167,262.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,703.48 : 299,051.57 = 121,204.07 : x
  2. Step 2: Convert to fraction form
    216,703.48/299,051.57 = 121,204.07/x
  3. Step 3: Cross multiply
    216,703.48x = 299,051.57 × 121,204.07
  4. Step 4: Simplify right side
    216,703.48x = 36,246,267,423.89
  5. Step 5: Solve for x
    x = 36,246,267,423.89/216,703.48
  6. Step 6: Final answer
    x = 167,262.05

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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.