Home / 386,941.96-534,003.80-257,658.76

Finding the Fourth Proportional to 386,941.96, 534,003.80 and 257,658.76

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Solution

The fourth proportional to 386,941.96, 534,003.80 and 257,658.76 is: 355,585.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,941.96 : 534,003.80 = 257,658.76 : x
  2. Step 2: Convert to fraction form
    386,941.96/534,003.80 = 257,658.76/x
  3. Step 3: Cross multiply
    386,941.96x = 534,003.80 × 257,658.76
  4. Step 4: Simplify right side
    386,941.96x = 137,590,756,943.29
  5. Step 5: Solve for x
    x = 137,590,756,943.29/386,941.96
  6. Step 6: Final answer
    x = 355,585.00

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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.