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Finding the Fourth Proportional to 388,292.56, 536,009.06 and 261,041.96

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Solution

The fourth proportional to 388,292.56, 536,009.06 and 261,041.96 is: 360,349.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,292.56 : 536,009.06 = 261,041.96 : x
  2. Step 2: Convert to fraction form
    388,292.56/536,009.06 = 261,041.96/x
  3. Step 3: Cross multiply
    388,292.56x = 536,009.06 × 261,041.96
  4. Step 4: Simplify right side
    388,292.56x = 139,920,855,600.16
  5. Step 5: Solve for x
    x = 139,920,855,600.16/388,292.56
  6. Step 6: Final answer
    x = 360,349.05

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.