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Finding the Fourth Proportional to 528,397.75, 729,188.90 and 302,048.11

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Solution

The fourth proportional to 528,397.75, 729,188.90 and 302,048.11 is: 416,826.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,397.75 : 729,188.90 = 302,048.11 : x
  2. Step 2: Convert to fraction form
    528,397.75/729,188.90 = 302,048.11/x
  3. Step 3: Cross multiply
    528,397.75x = 729,188.90 × 302,048.11
  4. Step 4: Simplify right side
    528,397.75x = 220,250,129,077.98
  5. Step 5: Solve for x
    x = 220,250,129,077.98/528,397.75
  6. Step 6: Final answer
    x = 416,826.39

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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.