Home / 256,203.30-384,341.40-78,683.70

Finding the Fourth Proportional to 256,203.30, 384,341.40 and 78,683.70

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Solution

The fourth proportional to 256,203.30, 384,341.40 and 78,683.70 is: 118,036.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,203.30 : 384,341.40 = 78,683.70 : x
  2. Step 2: Convert to fraction form
    256,203.30/384,341.40 = 78,683.70/x
  3. Step 3: Cross multiply
    256,203.30x = 384,341.40 × 78,683.70
  4. Step 4: Simplify right side
    256,203.30x = 30,241,403,415.18
  5. Step 5: Solve for x
    x = 30,241,403,415.18/256,203.30
  6. Step 6: Final answer
    x = 118,036.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.