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Finding the Fourth Proportional to 310,785.95, 428,922.55 and 174,825.63

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Solution

The fourth proportional to 310,785.95, 428,922.55 and 174,825.63 is: 241,280.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,785.95 : 428,922.55 = 174,825.63 : x
  2. Step 2: Convert to fraction form
    310,785.95/428,922.55 = 174,825.63/x
  3. Step 3: Cross multiply
    310,785.95x = 428,922.55 × 174,825.63
  4. Step 4: Simplify right side
    310,785.95x = 74,986,655,024.96
  5. Step 5: Solve for x
    x = 74,986,655,024.96/310,785.95
  6. Step 6: Final answer
    x = 241,280.71

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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.