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Finding the Fourth Proportional to 216,322.32, 324,428.70 and 64,484.36

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Solution

The fourth proportional to 216,322.32, 324,428.70 and 64,484.36 is: 96,710.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,322.32 : 324,428.70 = 64,484.36 : x
  2. Step 2: Convert to fraction form
    216,322.32/324,428.70 = 64,484.36/x
  3. Step 3: Cross multiply
    216,322.32x = 324,428.70 × 64,484.36
  4. Step 4: Simplify right side
    216,322.32x = 20,920,577,085.13
  5. Step 5: Solve for x
    x = 20,920,577,085.13/216,322.32
  6. Step 6: Final answer
    x = 96,710.21

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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.