Home / 388,309.32-536,032.20-261,058.74

Finding the Fourth Proportional to 388,309.32, 536,032.20 and 261,058.74

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Solution

The fourth proportional to 388,309.32, 536,032.20 and 261,058.74 is: 360,372.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,309.32 : 536,032.20 = 261,058.74 : x
  2. Step 2: Convert to fraction form
    388,309.32/536,032.20 = 261,058.74/x
  3. Step 3: Cross multiply
    388,309.32x = 536,032.20 × 261,058.74
  4. Step 4: Simplify right side
    388,309.32x = 139,935,890,731.43
  5. Step 5: Solve for x
    x = 139,935,890,731.43/388,309.32
  6. Step 6: Final answer
    x = 360,372.22

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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.