Home / 280,155.23-386,612.43-159,296.51

Finding the Fourth Proportional to 280,155.23, 386,612.43 and 159,296.51

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Solution

The fourth proportional to 280,155.23, 386,612.43 and 159,296.51 is: 219,828.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,155.23 : 386,612.43 = 159,296.51 : x
  2. Step 2: Convert to fraction form
    280,155.23/386,612.43 = 159,296.51/x
  3. Step 3: Cross multiply
    280,155.23x = 386,612.43 × 159,296.51
  4. Step 4: Simplify right side
    280,155.23x = 61,586,010,647.11
  5. Step 5: Solve for x
    x = 61,586,010,647.11/280,155.23
  6. Step 6: Final answer
    x = 219,828.17

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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.