Home / 347,050.80-519,701.40-257,821.20

Finding the Fourth Proportional to 347,050.80, 519,701.40 and 257,821.20

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Solution

The fourth proportional to 347,050.80, 519,701.40 and 257,821.20 is: 386,081.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,050.80 : 519,701.40 = 257,821.20 : x
  2. Step 2: Convert to fraction form
    347,050.80/519,701.40 = 257,821.20/x
  3. Step 3: Cross multiply
    347,050.80x = 519,701.40 × 257,821.20
  4. Step 4: Simplify right side
    347,050.80x = 133,990,038,589.68
  5. Step 5: Solve for x
    x = 133,990,038,589.68/347,050.80
  6. Step 6: Final answer
    x = 386,081.92

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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.