Home / 285,214.19-393,600.25-156,150.51

Finding the Fourth Proportional to 285,214.19, 393,600.25 and 156,150.51

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Solution

The fourth proportional to 285,214.19, 393,600.25 and 156,150.51 is: 215,490.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,214.19 : 393,600.25 = 156,150.51 : x
  2. Step 2: Convert to fraction form
    285,214.19/393,600.25 = 156,150.51/x
  3. Step 3: Cross multiply
    285,214.19x = 393,600.25 × 156,150.51
  4. Step 4: Simplify right side
    285,214.19x = 61,460,879,773.63
  5. Step 5: Solve for x
    x = 61,460,879,773.63/285,214.19
  6. Step 6: Final answer
    x = 215,490.26

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Half scale
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Double scale
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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.