Home / 509,036.16-763,641.60-172,079.36

Finding the Fourth Proportional to 509,036.16, 763,641.60 and 172,079.36

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Solution

The fourth proportional to 509,036.16, 763,641.60 and 172,079.36 is: 258,148.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,036.16 : 763,641.60 = 172,079.36 : x
  2. Step 2: Convert to fraction form
    509,036.16/763,641.60 = 172,079.36/x
  3. Step 3: Cross multiply
    509,036.16x = 763,641.60 × 172,079.36
  4. Step 4: Simplify right side
    509,036.16x = 131,406,957,797.38
  5. Step 5: Solve for x
    x = 131,406,957,797.38/509,036.16
  6. Step 6: Final answer
    x = 258,148.57

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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.