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Finding the Fourth Proportional to 508,817.80, 763,226.70 and 256,875.40

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Solution

The fourth proportional to 508,817.80, 763,226.70 and 256,875.40 is: 385,313.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,817.80 : 763,226.70 = 256,875.40 : x
  2. Step 2: Convert to fraction form
    508,817.80/763,226.70 = 256,875.40/x
  3. Step 3: Cross multiply
    508,817.80x = 763,226.70 × 256,875.40
  4. Step 4: Simplify right side
    508,817.80x = 196,054,163,853.18
  5. Step 5: Solve for x
    x = 196,054,163,853.18/508,817.80
  6. Step 6: Final answer
    x = 385,313.10

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Similar ratio
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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.