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Finding the Fourth Proportional to 549,329.92, 758,012.64 and 307,578.88

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Solution

The fourth proportional to 549,329.92, 758,012.64 and 307,578.88 is: 424,423.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    549,329.92 : 758,012.64 = 307,578.88 : x
  2. Step 2: Convert to fraction form
    549,329.92/758,012.64 = 307,578.88/x
  3. Step 3: Cross multiply
    549,329.92x = 758,012.64 × 307,578.88
  4. Step 4: Simplify right side
    549,329.92x = 233,148,678,837.04
  5. Step 5: Solve for x
    x = 233,148,678,837.04/549,329.92
  6. Step 6: Final answer
    x = 424,423.78

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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.