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Finding the Fourth Proportional to 612,284.42, 918,409.70 and 163,009.18

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Solution

The fourth proportional to 612,284.42, 918,409.70 and 163,009.18 is: 244,509.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,284.42 : 918,409.70 = 163,009.18 : x
  2. Step 2: Convert to fraction form
    612,284.42/918,409.70 = 163,009.18/x
  3. Step 3: Cross multiply
    612,284.42x = 918,409.70 × 163,009.18
  4. Step 4: Simplify right side
    612,284.42x = 149,709,212,101.05
  5. Step 5: Solve for x
    x = 149,709,212,101.05/612,284.42
  6. Step 6: Final answer
    x = 244,509.26

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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.