Home / 389,305.51-537,140.09-228,073.93

Finding the Fourth Proportional to 389,305.51, 537,140.09 and 228,073.93

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Solution

The fourth proportional to 389,305.51, 537,140.09 and 228,073.93 is: 314,682.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,305.51 : 537,140.09 = 228,073.93 : x
  2. Step 2: Convert to fraction form
    389,305.51/537,140.09 = 228,073.93/x
  3. Step 3: Cross multiply
    389,305.51x = 537,140.09 × 228,073.93
  4. Step 4: Simplify right side
    389,305.51x = 122,507,650,514.19
  5. Step 5: Solve for x
    x = 122,507,650,514.19/389,305.51
  6. Step 6: Final answer
    x = 314,682.55

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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.