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Finding the Fourth Proportional to 614,368.44, 921,967.80 and 215,012.64

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Solution

The fourth proportional to 614,368.44, 921,967.80 and 215,012.64 is: 322,664.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    614,368.44 : 921,967.80 = 215,012.64 : x
  2. Step 2: Convert to fraction form
    614,368.44/921,967.80 = 215,012.64/x
  3. Step 3: Cross multiply
    614,368.44x = 921,967.80 × 215,012.64
  4. Step 4: Simplify right side
    614,368.44x = 198,234,730,672.99
  5. Step 5: Solve for x
    x = 198,234,730,672.99/614,368.44
  6. Step 6: Final answer
    x = 322,664.25

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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.