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Finding the Fourth Proportional to 402,124.60, 603,405.60 and 165,491.20

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Solution

The fourth proportional to 402,124.60, 603,405.60 and 165,491.20 is: 248,326.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,124.60 : 603,405.60 = 165,491.20 : x
  2. Step 2: Convert to fraction form
    402,124.60/603,405.60 = 165,491.20/x
  3. Step 3: Cross multiply
    402,124.60x = 603,405.60 × 165,491.20
  4. Step 4: Simplify right side
    402,124.60x = 99,858,316,830.72
  5. Step 5: Solve for x
    x = 99,858,316,830.72/402,124.60
  6. Step 6: Final answer
    x = 248,326.80

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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.