Home / 283,643.10-391,448.70-156,319.20

Finding the Fourth Proportional to 283,643.10, 391,448.70 and 156,319.20

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Solution

The fourth proportional to 283,643.10, 391,448.70 and 156,319.20 is: 215,732.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,643.10 : 391,448.70 = 156,319.20 : x
  2. Step 2: Convert to fraction form
    283,643.10/391,448.70 = 156,319.20/x
  3. Step 3: Cross multiply
    283,643.10x = 391,448.70 × 156,319.20
  4. Step 4: Simplify right side
    283,643.10x = 61,190,947,625.04
  5. Step 5: Solve for x
    x = 61,190,947,625.04/283,643.10
  6. Step 6: Final answer
    x = 215,732.19

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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.