Home / 256,831.61-354,766.28-197,139.87

Finding the Fourth Proportional to 256,831.61, 354,766.28 and 197,139.87

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Solution

The fourth proportional to 256,831.61, 354,766.28 and 197,139.87 is: 272,312.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,831.61 : 354,766.28 = 197,139.87 : x
  2. Step 2: Convert to fraction form
    256,831.61/354,766.28 = 197,139.87/x
  3. Step 3: Cross multiply
    256,831.61x = 354,766.28 × 197,139.87
  4. Step 4: Simplify right side
    256,831.61x = 69,938,577,333.88
  5. Step 5: Solve for x
    x = 69,938,577,333.88/256,831.61
  6. Step 6: Final answer
    x = 272,312.97

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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.