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Finding the Fourth Proportional to 353,287.25, 529,931.13 and 87,047.76

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Solution

The fourth proportional to 353,287.25, 529,931.13 and 87,047.76 is: 130,571.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,287.25 : 529,931.13 = 87,047.76 : x
  2. Step 2: Convert to fraction form
    353,287.25/529,931.13 = 87,047.76/x
  3. Step 3: Cross multiply
    353,287.25x = 529,931.13 × 87,047.76
  4. Step 4: Simplify right side
    353,287.25x = 46,129,317,991.15
  5. Step 5: Solve for x
    x = 46,129,317,991.15/353,287.25
  6. Step 6: Final answer
    x = 130,571.70

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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.