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Finding the Fourth Proportional to 508,718.70, 763,078.05 and 242,998.20

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Solution

The fourth proportional to 508,718.70, 763,078.05 and 242,998.20 is: 364,497.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,718.70 : 763,078.05 = 242,998.20 : x
  2. Step 2: Convert to fraction form
    508,718.70/763,078.05 = 242,998.20/x
  3. Step 3: Cross multiply
    508,718.70x = 763,078.05 × 242,998.20
  4. Step 4: Simplify right side
    508,718.70x = 185,426,592,609.51
  5. Step 5: Solve for x
    x = 185,426,592,609.51/508,718.70
  6. Step 6: Final answer
    x = 364,497.30

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Double scale
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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.