Home / 312,511.08-431,264.50-169,271.48

Finding the Fourth Proportional to 312,511.08, 431,264.50 and 169,271.48

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Solution

The fourth proportional to 312,511.08, 431,264.50 and 169,271.48 is: 233,594.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,511.08 : 431,264.50 = 169,271.48 : x
  2. Step 2: Convert to fraction form
    312,511.08/431,264.50 = 169,271.48/x
  3. Step 3: Cross multiply
    312,511.08x = 431,264.50 × 169,271.48
  4. Step 4: Simplify right side
    312,511.08x = 73,000,780,186.46
  5. Step 5: Solve for x
    x = 73,000,780,186.46/312,511.08
  6. Step 6: Final answer
    x = 233,594.21

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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.