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Finding the Fourth Proportional to 580,015.11, 870,013.05 and 238,389.31

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Solution

The fourth proportional to 580,015.11, 870,013.05 and 238,389.31 is: 357,580.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    580,015.11 : 870,013.05 = 238,389.31 : x
  2. Step 2: Convert to fraction form
    580,015.11/870,013.05 = 238,389.31/x
  3. Step 3: Cross multiply
    580,015.11x = 870,013.05 × 238,389.31
  4. Step 4: Simplify right side
    580,015.11x = 207,401,810,680.50
  5. Step 5: Solve for x
    x = 207,401,810,680.50/580,015.11
  6. Step 6: Final answer
    x = 357,580.01

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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.