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Finding the Fourth Proportional to 345,341.79, 518,083.01 and 145,662.93

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Solution

The fourth proportional to 345,341.79, 518,083.01 and 145,662.93 is: 218,524.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,341.79 : 518,083.01 = 145,662.93 : x
  2. Step 2: Convert to fraction form
    345,341.79/518,083.01 = 145,662.93/x
  3. Step 3: Cross multiply
    345,341.79x = 518,083.01 × 145,662.93
  4. Step 4: Simplify right side
    345,341.79x = 75,465,488,491.50
  5. Step 5: Solve for x
    x = 75,465,488,491.50/345,341.79
  6. Step 6: Final answer
    x = 218,524.06

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1.5x scale

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.