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Finding the Fourth Proportional to 343,242.80, 514,864.20 and 319,914.80

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Solution

The fourth proportional to 343,242.80, 514,864.20 and 319,914.80 is: 479,872.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,242.80 : 514,864.20 = 319,914.80 : x
  2. Step 2: Convert to fraction form
    343,242.80/514,864.20 = 319,914.80/x
  3. Step 3: Cross multiply
    343,242.80x = 514,864.20 × 319,914.80
  4. Step 4: Simplify right side
    343,242.80x = 164,712,677,570.16
  5. Step 5: Solve for x
    x = 164,712,677,570.16/343,242.80
  6. Step 6: Final answer
    x = 479,872.20

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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.