Home / 283,640.04-391,421.28-156,315.75

Finding the Fourth Proportional to 283,640.04, 391,421.28 and 156,315.75

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Solution

The fourth proportional to 283,640.04, 391,421.28 and 156,315.75 is: 215,714.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,640.04 : 391,421.28 = 156,315.75 : x
  2. Step 2: Convert to fraction form
    283,640.04/391,421.28 = 156,315.75/x
  3. Step 3: Cross multiply
    283,640.04x = 391,421.28 × 156,315.75
  4. Step 4: Simplify right side
    283,640.04x = 61,185,310,949.16
  5. Step 5: Solve for x
    x = 61,185,310,949.16/283,640.04
  6. Step 6: Final answer
    x = 215,714.65

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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.