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Finding the Fourth Proportional to 351,013.80, 526,520.70 and 307,711.20

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Solution

The fourth proportional to 351,013.80, 526,520.70 and 307,711.20 is: 461,566.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,013.80 : 526,520.70 = 307,711.20 : x
  2. Step 2: Convert to fraction form
    351,013.80/526,520.70 = 307,711.20/x
  3. Step 3: Cross multiply
    351,013.80x = 526,520.70 × 307,711.20
  4. Step 4: Simplify right side
    351,013.80x = 162,016,316,421.84
  5. Step 5: Solve for x
    x = 162,016,316,421.84/351,013.80
  6. Step 6: Final answer
    x = 461,566.80

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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.