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Finding the Fourth Proportional to 425,548.86, 638,345.16 and 110,008.50

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Solution

The fourth proportional to 425,548.86, 638,345.16 and 110,008.50 is: 165,018.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,548.86 : 638,345.16 = 110,008.50 : x
  2. Step 2: Convert to fraction form
    425,548.86/638,345.16 = 110,008.50/x
  3. Step 3: Cross multiply
    425,548.86x = 638,345.16 × 110,008.50
  4. Step 4: Simplify right side
    425,548.86x = 70,223,393,533.86
  5. Step 5: Solve for x
    x = 70,223,393,533.86/425,548.86
  6. Step 6: Final answer
    x = 165,018.40

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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.