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Finding the Fourth Proportional to 425,116.89, 637,656.89 and 158,879.72

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Solution

The fourth proportional to 425,116.89, 637,656.89 and 158,879.72 is: 238,312.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,116.89 : 637,656.89 = 158,879.72 : x
  2. Step 2: Convert to fraction form
    425,116.89/637,656.89 = 158,879.72/x
  3. Step 3: Cross multiply
    425,116.89x = 637,656.89 × 158,879.72
  4. Step 4: Simplify right side
    425,116.89x = 101,310,748,139.27
  5. Step 5: Solve for x
    x = 101,310,748,139.27/425,116.89
  6. Step 6: Final answer
    x = 238,312.69

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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.