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Finding the Fourth Proportional to 307,510.70, 461,330.85 and 129,926.30

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Solution

The fourth proportional to 307,510.70, 461,330.85 and 129,926.30 is: 194,916.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,510.70 : 461,330.85 = 129,926.30 : x
  2. Step 2: Convert to fraction form
    307,510.70/461,330.85 = 129,926.30/x
  3. Step 3: Cross multiply
    307,510.70x = 461,330.85 × 129,926.30
  4. Step 4: Simplify right side
    307,510.70x = 59,939,010,416.36
  5. Step 5: Solve for x
    x = 59,939,010,416.36/307,510.70
  6. Step 6: Final answer
    x = 194,916.83

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1.5x scale

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.