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Finding the Fourth Proportional to 470,899.70, 706,349.54 and 138,475.70

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Solution

The fourth proportional to 470,899.70, 706,349.54 and 138,475.70 is: 207,713.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    470,899.70 : 706,349.54 = 138,475.70 : x
  2. Step 2: Convert to fraction form
    470,899.70/706,349.54 = 138,475.70/x
  3. Step 3: Cross multiply
    470,899.70x = 706,349.54 × 138,475.70
  4. Step 4: Simplify right side
    470,899.70x = 97,812,247,342.37
  5. Step 5: Solve for x
    x = 97,812,247,342.37/470,899.70
  6. Step 6: Final answer
    x = 207,713.55

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Similar ratio
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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.