Home / 431,820.04-646,862.59-215,025.63

Finding the Fourth Proportional to 431,820.04, 646,862.59 and 215,025.63

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Solution

The fourth proportional to 431,820.04, 646,862.59 and 215,025.63 is: 322,106.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,820.04 : 646,862.59 = 215,025.63 : x
  2. Step 2: Convert to fraction form
    431,820.04/646,862.59 = 215,025.63/x
  3. Step 3: Cross multiply
    431,820.04x = 646,862.59 × 215,025.63
  4. Step 4: Simplify right side
    431,820.04x = 139,092,034,863.05
  5. Step 5: Solve for x
    x = 139,092,034,863.05/431,820.04
  6. Step 6: Final answer
    x = 322,106.49

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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.