Home / 315,224,742.56-472,426,979.85-128,260,798.92

Finding the Fourth Proportional to 315,224,742.56, 472,426,979.85 and 128,260,798.92

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Solution

The fourth proportional to 315,224,742.56, 472,426,979.85 and 128,260,798.92 is: 192,224,320.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,224,742.56 : 472,426,979.85 = 128,260,798.92 : x
  2. Step 2: Convert to fraction form
    315,224,742.56/472,426,979.85 = 128,260,798.92/x
  3. Step 3: Cross multiply
    315,224,742.56x = 472,426,979.85 × 128,260,798.92
  4. Step 4: Simplify right side
    315,224,742.56x = 60,593,861,866,923,744
  5. Step 5: Solve for x
    x = 60,593,861,866,923,744/315,224,742.56
  6. Step 6: Final answer
    x = 192,224,320.26

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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.