Home / 210,436.15-315,792.33-77,317.51

Finding the Fourth Proportional to 210,436.15, 315,792.33 and 77,317.51

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Solution

The fourth proportional to 210,436.15, 315,792.33 and 77,317.51 is: 116,027.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,436.15 : 315,792.33 = 77,317.51 : x
  2. Step 2: Convert to fraction form
    210,436.15/315,792.33 = 77,317.51/x
  3. Step 3: Cross multiply
    210,436.15x = 315,792.33 × 77,317.51
  4. Step 4: Simplify right side
    210,436.15x = 24,416,276,632.70
  5. Step 5: Solve for x
    x = 24,416,276,632.70/210,436.15
  6. Step 6: Final answer
    x = 116,027.01

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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.