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Finding the Fourth Proportional to 315,505.56, 473,259.13 and 125,981.36

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Solution

The fourth proportional to 315,505.56, 473,259.13 and 125,981.36 is: 188,972.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,505.56 : 473,259.13 = 125,981.36 : x
  2. Step 2: Convert to fraction form
    315,505.56/473,259.13 = 125,981.36/x
  3. Step 3: Cross multiply
    315,505.56x = 473,259.13 × 125,981.36
  4. Step 4: Simplify right side
    315,505.56x = 59,621,828,829.82
  5. Step 5: Solve for x
    x = 59,621,828,829.82/315,505.56
  6. Step 6: Final answer
    x = 188,972.36

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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.