Home / 310,531.17-428,504.74-179,686.21

Finding the Fourth Proportional to 310,531.17, 428,504.74 and 179,686.21

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Solution

The fourth proportional to 310,531.17, 428,504.74 and 179,686.21 is: 247,950.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,531.17 : 428,504.74 = 179,686.21 : x
  2. Step 2: Convert to fraction form
    310,531.17/428,504.74 = 179,686.21/x
  3. Step 3: Cross multiply
    310,531.17x = 428,504.74 × 179,686.21
  4. Step 4: Simplify right side
    310,531.17x = 76,996,390,555.11
  5. Step 5: Solve for x
    x = 76,996,390,555.11/310,531.17
  6. Step 6: Final answer
    x = 247,950.60

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1.5x scale

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.