Home / 315,224,559.43-472,426,703.84-128,260,617.21

Finding the Fourth Proportional to 315,224,559.43, 472,426,703.84 and 128,260,617.21

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Solution

The fourth proportional to 315,224,559.43, 472,426,703.84 and 128,260,617.21 is: 192,224,047.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,224,559.43 : 472,426,703.84 = 128,260,617.21 : x
  2. Step 2: Convert to fraction form
    315,224,559.43/472,426,703.84 = 128,260,617.21/x
  3. Step 3: Cross multiply
    315,224,559.43x = 472,426,703.84 × 128,260,617.21
  4. Step 4: Simplify right side
    315,224,559.43x = 60,593,740,621,324,920
  5. Step 5: Solve for x
    x = 60,593,740,621,324,920/315,224,559.43
  6. Step 6: Final answer
    x = 192,224,047.30

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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.