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Finding the Fourth Proportional to 497,756.40, 746,634.60 and 142,806.30

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Solution

The fourth proportional to 497,756.40, 746,634.60 and 142,806.30 is: 214,209.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    497,756.40 : 746,634.60 = 142,806.30 : x
  2. Step 2: Convert to fraction form
    497,756.40/746,634.60 = 142,806.30/x
  3. Step 3: Cross multiply
    497,756.40x = 746,634.60 × 142,806.30
  4. Step 4: Simplify right side
    497,756.40x = 106,624,124,677.98
  5. Step 5: Solve for x
    x = 106,624,124,677.98/497,756.40
  6. Step 6: Final answer
    x = 214,209.45

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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.