Home / 256,890.89-354,503.81-140,603.78

Finding the Fourth Proportional to 256,890.89, 354,503.81 and 140,603.78

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Solution

The fourth proportional to 256,890.89, 354,503.81 and 140,603.78 is: 194,030.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,890.89 : 354,503.81 = 140,603.78 : x
  2. Step 2: Convert to fraction form
    256,890.89/354,503.81 = 140,603.78/x
  3. Step 3: Cross multiply
    256,890.89x = 354,503.81 × 140,603.78
  4. Step 4: Simplify right side
    256,890.89x = 49,844,576,948.17
  5. Step 5: Solve for x
    x = 49,844,576,948.17/256,890.89
  6. Step 6: Final answer
    x = 194,030.14

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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.