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Finding the Fourth Proportional to 572,275.38, 858,491.76 and 212,415.65

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Solution

The fourth proportional to 572,275.38, 858,491.76 and 212,415.65 is: 318,652.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,275.38 : 858,491.76 = 212,415.65 : x
  2. Step 2: Convert to fraction form
    572,275.38/858,491.76 = 212,415.65/x
  3. Step 3: Cross multiply
    572,275.38x = 858,491.76 × 212,415.65
  4. Step 4: Simplify right side
    572,275.38x = 182,357,086,835.23
  5. Step 5: Solve for x
    x = 182,357,086,835.23/572,275.38
  6. Step 6: Final answer
    x = 318,652.69

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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.