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Finding the Fourth Proportional to 310,839.60, 465,913.80 and 133,316.40

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Solution

The fourth proportional to 310,839.60, 465,913.80 and 133,316.40 is: 199,826.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,839.60 : 465,913.80 = 133,316.40 : x
  2. Step 2: Convert to fraction form
    310,839.60/465,913.80 = 133,316.40/x
  3. Step 3: Cross multiply
    310,839.60x = 465,913.80 × 133,316.40
  4. Step 4: Simplify right side
    310,839.60x = 62,113,950,526.32
  5. Step 5: Solve for x
    x = 62,113,950,526.32/310,839.60
  6. Step 6: Final answer
    x = 199,826.38

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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.