Home / 431,254.12-646,166.09-262,263.28

Finding the Fourth Proportional to 431,254.12, 646,166.09 and 262,263.28

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Solution

The fourth proportional to 431,254.12, 646,166.09 and 262,263.28 is: 392,960.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,254.12 : 646,166.09 = 262,263.28 : x
  2. Step 2: Convert to fraction form
    431,254.12/646,166.09 = 262,263.28/x
  3. Step 3: Cross multiply
    431,254.12x = 646,166.09 × 262,263.28
  4. Step 4: Simplify right side
    431,254.12x = 169,465,636,876.86
  5. Step 5: Solve for x
    x = 169,465,636,876.86/431,254.12
  6. Step 6: Final answer
    x = 392,960.04

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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.