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Finding the Fourth Proportional to 256,645.98, 385,054.83 and 144,545.76

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Solution

The fourth proportional to 256,645.98, 385,054.83 and 144,545.76 is: 216,867.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,645.98 : 385,054.83 = 144,545.76 : x
  2. Step 2: Convert to fraction form
    256,645.98/385,054.83 = 144,545.76/x
  3. Step 3: Cross multiply
    256,645.98x = 385,054.83 × 144,545.76
  4. Step 4: Simplify right side
    256,645.98x = 55,658,043,044.02
  5. Step 5: Solve for x
    x = 55,658,043,044.02/256,645.98
  6. Step 6: Final answer
    x = 216,867.00

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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.