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Finding the Fourth Proportional to 528,409.75, 729,205.50 and 302,060.11

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Solution

The fourth proportional to 528,409.75, 729,205.50 and 302,060.11 is: 416,842.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,409.75 : 729,205.50 = 302,060.11 : x
  2. Step 2: Convert to fraction form
    528,409.75/729,205.50 = 302,060.11/x
  3. Step 3: Cross multiply
    528,409.75x = 729,205.50 × 302,060.11
  4. Step 4: Simplify right side
    528,409.75x = 220,263,893,542.61
  5. Step 5: Solve for x
    x = 220,263,893,542.61/528,409.75
  6. Step 6: Final answer
    x = 416,842.98

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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.