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Finding the Fourth Proportional to 381,386.70, 572,080.05 and 97,076.70

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Solution

The fourth proportional to 381,386.70, 572,080.05 and 97,076.70 is: 145,615.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,386.70 : 572,080.05 = 97,076.70 : x
  2. Step 2: Convert to fraction form
    381,386.70/572,080.05 = 97,076.70/x
  3. Step 3: Cross multiply
    381,386.70x = 572,080.05 × 97,076.70
  4. Step 4: Simplify right side
    381,386.70x = 55,535,643,389.84
  5. Step 5: Solve for x
    x = 55,535,643,389.84/381,386.70
  6. Step 6: Final answer
    x = 145,615.05

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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.