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Finding the Fourth Proportional to 535,339.42, 738,830.12 and 320,479.42

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Solution

The fourth proportional to 535,339.42, 738,830.12 and 320,479.42 is: 442,298.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    535,339.42 : 738,830.12 = 320,479.42 : x
  2. Step 2: Convert to fraction form
    535,339.42/738,830.12 = 320,479.42/x
  3. Step 3: Cross multiply
    535,339.42x = 738,830.12 × 320,479.42
  4. Step 4: Simplify right side
    535,339.42x = 236,779,848,336.13
  5. Step 5: Solve for x
    x = 236,779,848,336.13/535,339.42
  6. Step 6: Final answer
    x = 442,298.55

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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.