Home / 377,154.08-520,428.97-215,999.51

Finding the Fourth Proportional to 377,154.08, 520,428.97 and 215,999.51

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Solution

The fourth proportional to 377,154.08, 520,428.97 and 215,999.51 is: 298,054.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    377,154.08 : 520,428.97 = 215,999.51 : x
  2. Step 2: Convert to fraction form
    377,154.08/520,428.97 = 215,999.51/x
  3. Step 3: Cross multiply
    377,154.08x = 520,428.97 × 215,999.51
  4. Step 4: Simplify right side
    377,154.08x = 112,412,402,509.81
  5. Step 5: Solve for x
    x = 112,412,402,509.81/377,154.08
  6. Step 6: Final answer
    x = 298,054.32

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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.