Home / 386,003.16-578,986.20-105,521.04

Finding the Fourth Proportional to 386,003.16, 578,986.20 and 105,521.04

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Solution

The fourth proportional to 386,003.16, 578,986.20 and 105,521.04 is: 158,276.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,003.16 : 578,986.20 = 105,521.04 : x
  2. Step 2: Convert to fraction form
    386,003.16/578,986.20 = 105,521.04/x
  3. Step 3: Cross multiply
    386,003.16x = 578,986.20 × 105,521.04
  4. Step 4: Simplify right side
    386,003.16x = 61,095,225,969.65
  5. Step 5: Solve for x
    x = 61,095,225,969.65/386,003.16
  6. Step 6: Final answer
    x = 158,276.49

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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.