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Finding the Fourth Proportional to 508,911.12, 702,295.92 and 282,555

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Solution

The fourth proportional to 508,911.12, 702,295.92 and 282,555 is: 389,925.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,911.12 : 702,295.92 = 282,555 : x
  2. Step 2: Convert to fraction form
    508,911.12/702,295.92 = 282,555/x
  3. Step 3: Cross multiply
    508,911.12x = 702,295.92 × 282,555
  4. Step 4: Simplify right side
    508,911.12x = 198,437,223,675.60
  5. Step 5: Solve for x
    x = 198,437,223,675.60/508,911.12
  6. Step 6: Final answer
    x = 389,925.11

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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.