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Finding the Fourth Proportional to 351,130.40, 526,695.60 and 210,816.80

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Solution

The fourth proportional to 351,130.40, 526,695.60 and 210,816.80 is: 316,225.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,130.40 : 526,695.60 = 210,816.80 : x
  2. Step 2: Convert to fraction form
    351,130.40/526,695.60 = 210,816.80/x
  3. Step 3: Cross multiply
    351,130.40x = 526,695.60 × 210,816.80
  4. Step 4: Simplify right side
    351,130.40x = 111,036,280,966.08
  5. Step 5: Solve for x
    x = 111,036,280,966.08/351,130.40
  6. Step 6: Final answer
    x = 316,225.20

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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.