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Finding the Fourth Proportional to 425,964.72, 638,707.32 and 141,502.98

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Solution

The fourth proportional to 425,964.72, 638,707.32 and 141,502.98 is: 212,174.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,964.72 : 638,707.32 = 141,502.98 : x
  2. Step 2: Convert to fraction form
    425,964.72/638,707.32 = 141,502.98/x
  3. Step 3: Cross multiply
    425,964.72x = 638,707.32 × 141,502.98
  4. Step 4: Simplify right side
    425,964.72x = 90,378,989,127.81
  5. Step 5: Solve for x
    x = 90,378,989,127.81/425,964.72
  6. Step 6: Final answer
    x = 212,174.82

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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.