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Finding the Fourth Proportional to 659,315.40, 988,973.10 and 160,679.40

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Solution

The fourth proportional to 659,315.40, 988,973.10 and 160,679.40 is: 241,019.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,315.40 : 988,973.10 = 160,679.40 : x
  2. Step 2: Convert to fraction form
    659,315.40/988,973.10 = 160,679.40/x
  3. Step 3: Cross multiply
    659,315.40x = 988,973.10 × 160,679.40
  4. Step 4: Simplify right side
    659,315.40x = 158,907,604,324.14
  5. Step 5: Solve for x
    x = 158,907,604,324.14/659,315.40
  6. Step 6: Final answer
    x = 241,019.10

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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.