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Finding the Fourth Proportional to 522,516.54, 721,139.52 and 307,676.52

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Solution

The fourth proportional to 522,516.54, 721,139.52 and 307,676.52 is: 424,632.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    522,516.54 : 721,139.52 = 307,676.52 : x
  2. Step 2: Convert to fraction form
    522,516.54/721,139.52 = 307,676.52/x
  3. Step 3: Cross multiply
    522,516.54x = 721,139.52 × 307,676.52
  4. Step 4: Simplify right side
    522,516.54x = 221,877,697,948.07
  5. Step 5: Solve for x
    x = 221,877,697,948.07/522,516.54
  6. Step 6: Final answer
    x = 424,632.87

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.