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Finding the Fourth Proportional to 468,109.61, 645,989.58 and 253,249.73

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Solution

The fourth proportional to 468,109.61, 645,989.58 and 253,249.73 is: 349,483.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    468,109.61 : 645,989.58 = 253,249.73 : x
  2. Step 2: Convert to fraction form
    468,109.61/645,989.58 = 253,249.73/x
  3. Step 3: Cross multiply
    468,109.61x = 645,989.58 × 253,249.73
  4. Step 4: Simplify right side
    468,109.61x = 163,596,683,487.87
  5. Step 5: Solve for x
    x = 163,596,683,487.87/468,109.61
  6. Step 6: Final answer
    x = 349,483.71

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1.5x scale

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.