Home / 312,764.40-431,455.86-197,849.52

Finding the Fourth Proportional to 312,764.40, 431,455.86 and 197,849.52

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Solution

The fourth proportional to 312,764.40, 431,455.86 and 197,849.52 is: 272,931.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,764.40 : 431,455.86 = 197,849.52 : x
  2. Step 2: Convert to fraction form
    312,764.40/431,455.86 = 197,849.52/x
  3. Step 3: Cross multiply
    312,764.40x = 431,455.86 × 197,849.52
  4. Step 4: Simplify right side
    312,764.40x = 85,363,334,802.19
  5. Step 5: Solve for x
    x = 85,363,334,802.19/312,764.40
  6. Step 6: Final answer
    x = 272,931.75

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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.