Home / 438,433.74-605,041.38-257,108.76

Finding the Fourth Proportional to 438,433.74, 605,041.38 and 257,108.76

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Solution

The fourth proportional to 438,433.74, 605,041.38 and 257,108.76 is: 354,811.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,433.74 : 605,041.38 = 257,108.76 : x
  2. Step 2: Convert to fraction form
    438,433.74/605,041.38 = 257,108.76/x
  3. Step 3: Cross multiply
    438,433.74x = 605,041.38 × 257,108.76
  4. Step 4: Simplify right side
    438,433.74x = 155,561,438,960.49
  5. Step 5: Solve for x
    x = 155,561,438,960.49/438,433.74
  6. Step 6: Final answer
    x = 354,811.74

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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.