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Finding the Fourth Proportional to 395,931.80, 593,897.70 and 115,477.40

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Solution

The fourth proportional to 395,931.80, 593,897.70 and 115,477.40 is: 173,216.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,931.80 : 593,897.70 = 115,477.40 : x
  2. Step 2: Convert to fraction form
    395,931.80/593,897.70 = 115,477.40/x
  3. Step 3: Cross multiply
    395,931.80x = 593,897.70 × 115,477.40
  4. Step 4: Simplify right side
    395,931.80x = 68,581,762,261.98
  5. Step 5: Solve for x
    x = 68,581,762,261.98/395,931.80
  6. Step 6: Final answer
    x = 173,216.10

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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.