Home / 405,238.15-607,313.84-315,389.35

Finding the Fourth Proportional to 405,238.15, 607,313.84 and 315,389.35

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Solution

The fourth proportional to 405,238.15, 607,313.84 and 315,389.35 is: 472,661.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,238.15 : 607,313.84 = 315,389.35 : x
  2. Step 2: Convert to fraction form
    405,238.15/607,313.84 = 315,389.35/x
  3. Step 3: Cross multiply
    405,238.15x = 607,313.84 × 315,389.35
  4. Step 4: Simplify right side
    405,238.15x = 191,540,314,148.37
  5. Step 5: Solve for x
    x = 191,540,314,148.37/405,238.15
  6. Step 6: Final answer
    x = 472,661.11

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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.