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Finding the Fourth Proportional to 315,064.04, 472,187.82 and 127,973.48

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Solution

The fourth proportional to 315,064.04, 472,187.82 and 127,973.48 is: 191,794.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,064.04 : 472,187.82 = 127,973.48 : x
  2. Step 2: Convert to fraction form
    315,064.04/472,187.82 = 127,973.48/x
  3. Step 3: Cross multiply
    315,064.04x = 472,187.82 × 127,973.48
  4. Step 4: Simplify right side
    315,064.04x = 60,427,518,539.01
  5. Step 5: Solve for x
    x = 60,427,518,539.01/315,064.04
  6. Step 6: Final answer
    x = 191,794.40

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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.