Home / 256,817.32-385,208.70-90,602.92

Finding the Fourth Proportional to 256,817.32, 385,208.70 and 90,602.92

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Solution

The fourth proportional to 256,817.32, 385,208.70 and 90,602.92 is: 135,898.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,817.32 : 385,208.70 = 90,602.92 : x
  2. Step 2: Convert to fraction form
    256,817.32/385,208.70 = 90,602.92/x
  3. Step 3: Cross multiply
    256,817.32x = 385,208.70 × 90,602.92
  4. Step 4: Simplify right side
    256,817.32x = 34,901,033,029.40
  5. Step 5: Solve for x
    x = 34,901,033,029.40/256,817.32
  6. Step 6: Final answer
    x = 135,898.28

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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.