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Finding the Fourth Proportional to 216,417.59, 324,642.70 and 64,602.68

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Solution

The fourth proportional to 216,417.59, 324,642.70 and 64,602.68 is: 96,908.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,417.59 : 324,642.70 = 64,602.68 : x
  2. Step 2: Convert to fraction form
    216,417.59/324,642.70 = 64,602.68/x
  3. Step 3: Cross multiply
    216,417.59x = 324,642.70 × 64,602.68
  4. Step 4: Simplify right side
    216,417.59x = 20,972,788,746.09
  5. Step 5: Solve for x
    x = 20,972,788,746.09/216,417.59
  6. Step 6: Final answer
    x = 96,908.89

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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.