Home / 456,429.20-684,643.80-207,111.20

Finding the Fourth Proportional to 456,429.20, 684,643.80 and 207,111.20

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Solution

The fourth proportional to 456,429.20, 684,643.80 and 207,111.20 is: 310,666.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    456,429.20 : 684,643.80 = 207,111.20 : x
  2. Step 2: Convert to fraction form
    456,429.20/684,643.80 = 207,111.20/x
  3. Step 3: Cross multiply
    456,429.20x = 684,643.80 × 207,111.20
  4. Step 4: Simplify right side
    456,429.20x = 141,797,398,990.56
  5. Step 5: Solve for x
    x = 141,797,398,990.56/456,429.20
  6. Step 6: Final answer
    x = 310,666.80

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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.