Home / 476,899.12-715,345.80-121,912.56

Finding the Fourth Proportional to 476,899.12, 715,345.80 and 121,912.56

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Solution

The fourth proportional to 476,899.12, 715,345.80 and 121,912.56 is: 182,868.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    476,899.12 : 715,345.80 = 121,912.56 : x
  2. Step 2: Convert to fraction form
    476,899.12/715,345.80 = 121,912.56/x
  3. Step 3: Cross multiply
    476,899.12x = 715,345.80 × 121,912.56
  4. Step 4: Simplify right side
    476,899.12x = 87,209,637,763.25
  5. Step 5: Solve for x
    x = 87,209,637,763.25/476,899.12
  6. Step 6: Final answer
    x = 182,868.10

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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.