Home / 212,933.60-319,444.47-86,573.85

Finding the Fourth Proportional to 212,933.60, 319,444.47 and 86,573.85

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Solution

The fourth proportional to 212,933.60, 319,444.47 and 86,573.85 is: 129,878.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,933.60 : 319,444.47 = 86,573.85 : x
  2. Step 2: Convert to fraction form
    212,933.60/319,444.47 = 86,573.85/x
  3. Step 3: Cross multiply
    212,933.60x = 319,444.47 × 86,573.85
  4. Step 4: Simplify right side
    212,933.60x = 27,655,537,629.11
  5. Step 5: Solve for x
    x = 27,655,537,629.11/212,933.60
  6. Step 6: Final answer
    x = 129,878.70

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1.5x scale

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.