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Finding the Fourth Proportional to 515,155.40, 772,733.10 and 291,206.60

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Solution

The fourth proportional to 515,155.40, 772,733.10 and 291,206.60 is: 436,809.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,155.40 : 772,733.10 = 291,206.60 : x
  2. Step 2: Convert to fraction form
    515,155.40/772,733.10 = 291,206.60/x
  3. Step 3: Cross multiply
    515,155.40x = 772,733.10 × 291,206.60
  4. Step 4: Simplify right side
    515,155.40x = 225,024,978,758.46
  5. Step 5: Solve for x
    x = 225,024,978,758.46/515,155.40
  6. Step 6: Final answer
    x = 436,809.90

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Similar ratio
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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.