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Finding the Fourth Proportional to 561,146.40, 841,719.60 and 140,421.60

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Solution

The fourth proportional to 561,146.40, 841,719.60 and 140,421.60 is: 210,632.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,146.40 : 841,719.60 = 140,421.60 : x
  2. Step 2: Convert to fraction form
    561,146.40/841,719.60 = 140,421.60/x
  3. Step 3: Cross multiply
    561,146.40x = 841,719.60 × 140,421.60
  4. Step 4: Simplify right side
    561,146.40x = 118,195,612,983.36
  5. Step 5: Solve for x
    x = 118,195,612,983.36/561,146.40
  6. Step 6: Final answer
    x = 210,632.40

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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.