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Finding the Fourth Proportional to 425,827.08, 638,798.94 and 145,269

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Solution

The fourth proportional to 425,827.08, 638,798.94 and 145,269 is: 217,923.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,827.08 : 638,798.94 = 145,269 : x
  2. Step 2: Convert to fraction form
    425,827.08/638,798.94 = 145,269/x
  3. Step 3: Cross multiply
    425,827.08x = 638,798.94 × 145,269
  4. Step 4: Simplify right side
    425,827.08x = 92,797,683,214.86
  5. Step 5: Solve for x
    x = 92,797,683,214.86/425,827.08
  6. Step 6: Final answer
    x = 217,923.40

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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.