Home / 509,317.83-763,501.91-172,122.71

Finding the Fourth Proportional to 509,317.83, 763,501.91 and 172,122.71

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Solution

The fourth proportional to 509,317.83, 763,501.91 and 172,122.71 is: 258,023.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,317.83 : 763,501.91 = 172,122.71 : x
  2. Step 2: Convert to fraction form
    509,317.83/763,501.91 = 172,122.71/x
  3. Step 3: Cross multiply
    509,317.83x = 763,501.91 × 172,122.71
  4. Step 4: Simplify right side
    509,317.83x = 131,416,013,161.25
  5. Step 5: Solve for x
    x = 131,416,013,161.25/509,317.83
  6. Step 6: Final answer
    x = 258,023.59

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1.5x scale

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.