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Finding the Fourth Proportional to 660,254.30, 990,447.06 and 239,562.98

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Solution

The fourth proportional to 660,254.30, 990,447.06 and 239,562.98 is: 359,368.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,254.30 : 990,447.06 = 239,562.98 : x
  2. Step 2: Convert to fraction form
    660,254.30/990,447.06 = 239,562.98/x
  3. Step 3: Cross multiply
    660,254.30x = 990,447.06 × 239,562.98
  4. Step 4: Simplify right side
    660,254.30x = 237,274,449,225.84
  5. Step 5: Solve for x
    x = 237,274,449,225.84/660,254.30
  6. Step 6: Final answer
    x = 359,368.28

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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.