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Finding the Fourth Proportional to 626,355.59, 939,671.28 and 266,507.21

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Solution

The fourth proportional to 626,355.59, 939,671.28 and 266,507.21 is: 399,819.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,355.59 : 939,671.28 = 266,507.21 : x
  2. Step 2: Convert to fraction form
    626,355.59/939,671.28 = 266,507.21/x
  3. Step 3: Cross multiply
    626,355.59x = 939,671.28 × 266,507.21
  4. Step 4: Simplify right side
    626,355.59x = 250,429,173,499.11
  5. Step 5: Solve for x
    x = 250,429,173,499.11/626,355.59
  6. Step 6: Final answer
    x = 399,819.49

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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.