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Finding the Fourth Proportional to 351,386.60, 525,870.30 and 211,245.80

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Solution

The fourth proportional to 351,386.60, 525,870.30 and 211,245.80 is: 316,141.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,386.60 : 525,870.30 = 211,245.80 : x
  2. Step 2: Convert to fraction form
    351,386.60/525,870.30 = 211,245.80/x
  3. Step 3: Cross multiply
    351,386.60x = 525,870.30 × 211,245.80
  4. Step 4: Simplify right side
    351,386.60x = 111,087,892,219.74
  5. Step 5: Solve for x
    x = 111,087,892,219.74/351,386.60
  6. Step 6: Final answer
    x = 316,141.52

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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.