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Finding the Fourth Proportional to 528,633.03, 729,502.71 and 299,186.21

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Solution

The fourth proportional to 528,633.03, 729,502.71 and 299,186.21 is: 412,870.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,633.03 : 729,502.71 = 299,186.21 : x
  2. Step 2: Convert to fraction form
    528,633.03/729,502.71 = 299,186.21/x
  3. Step 3: Cross multiply
    528,633.03x = 729,502.71 × 299,186.21
  4. Step 4: Simplify right side
    528,633.03x = 218,257,147,587.99
  5. Step 5: Solve for x
    x = 218,257,147,587.99/528,633.03
  6. Step 6: Final answer
    x = 412,870.81

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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.