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Finding the Fourth Proportional to 348,010.80, 520,979.40 and 207,697.20

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Solution

The fourth proportional to 348,010.80, 520,979.40 and 207,697.20 is: 310,927.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    348,010.80 : 520,979.40 = 207,697.20 : x
  2. Step 2: Convert to fraction form
    348,010.80/520,979.40 = 207,697.20/x
  3. Step 3: Cross multiply
    348,010.80x = 520,979.40 × 207,697.20
  4. Step 4: Simplify right side
    348,010.80x = 108,205,962,637.68
  5. Step 5: Solve for x
    x = 108,205,962,637.68/348,010.80
  6. Step 6: Final answer
    x = 310,927.02

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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.