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Finding the Fourth Proportional to 471,563.04, 707,474.08 and 139,139.04

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Solution

The fourth proportional to 471,563.04, 707,474.08 and 139,139.04 is: 208,746.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    471,563.04 : 707,474.08 = 139,139.04 : x
  2. Step 2: Convert to fraction form
    471,563.04/707,474.08 = 139,139.04/x
  3. Step 3: Cross multiply
    471,563.04x = 707,474.08 × 139,139.04
  4. Step 4: Simplify right side
    471,563.04x = 98,437,264,316.08
  5. Step 5: Solve for x
    x = 98,437,264,316.08/471,563.04
  6. Step 6: Final answer
    x = 208,746.78

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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.