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Finding the Fourth Proportional to 315,763.77, 473,326.45 and 135,966.45

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Solution

The fourth proportional to 315,763.77, 473,326.45 and 135,966.45 is: 203,812.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,763.77 : 473,326.45 = 135,966.45 : x
  2. Step 2: Convert to fraction form
    315,763.77/473,326.45 = 135,966.45/x
  3. Step 3: Cross multiply
    315,763.77x = 473,326.45 × 135,966.45
  4. Step 4: Simplify right side
    315,763.77x = 64,356,517,097.60
  5. Step 5: Solve for x
    x = 64,356,517,097.60/315,763.77
  6. Step 6: Final answer
    x = 203,812.23

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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.