Home / 283,686.49-391,488.15-156,362.59

Finding the Fourth Proportional to 283,686.49, 391,488.15 and 156,362.59

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Solution

The fourth proportional to 283,686.49, 391,488.15 and 156,362.59 is: 215,780.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,686.49 : 391,488.15 = 156,362.59 : x
  2. Step 2: Convert to fraction form
    283,686.49/391,488.15 = 156,362.59/x
  3. Step 3: Cross multiply
    283,686.49x = 391,488.15 × 156,362.59
  4. Step 4: Simplify right side
    283,686.49x = 61,214,101,088.31
  5. Step 5: Solve for x
    x = 61,214,101,088.31/283,686.49
  6. Step 6: Final answer
    x = 215,780.81

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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.