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Finding the Fourth Proportional to 355,488.60, 533,232.90 and 261,010.20

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Solution

The fourth proportional to 355,488.60, 533,232.90 and 261,010.20 is: 391,515.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,488.60 : 533,232.90 = 261,010.20 : x
  2. Step 2: Convert to fraction form
    355,488.60/533,232.90 = 261,010.20/x
  3. Step 3: Cross multiply
    355,488.60x = 533,232.90 × 261,010.20
  4. Step 4: Simplify right side
    355,488.60x = 139,179,225,875.58
  5. Step 5: Solve for x
    x = 139,179,225,875.58/355,488.60
  6. Step 6: Final answer
    x = 391,515.30

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Similar ratio
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1.5x scale

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.