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Finding the Fourth Proportional to 296,989.88, 445,439.54 and 97,331

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Solution

The fourth proportional to 296,989.88, 445,439.54 and 97,331 is: 145,981.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    296,989.88 : 445,439.54 = 97,331 : x
  2. Step 2: Convert to fraction form
    296,989.88/445,439.54 = 97,331/x
  3. Step 3: Cross multiply
    296,989.88x = 445,439.54 × 97,331
  4. Step 4: Simplify right side
    296,989.88x = 43,355,075,867.74
  5. Step 5: Solve for x
    x = 43,355,075,867.74/296,989.88
  6. Step 6: Final answer
    x = 145,981.66

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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.