Home / 315,597,763.20-473,060,721.60-121,434,153.60

Finding the Fourth Proportional to 315,597,763.20, 473,060,721.60 and 121,434,153.60

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Solution

The fourth proportional to 315,597,763.20, 473,060,721.60 and 121,434,153.60 is: 182,021,975.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,597,763.20 : 473,060,721.60 = 121,434,153.60 : x
  2. Step 2: Convert to fraction form
    315,597,763.20/473,060,721.60 = 121,434,153.60/x
  3. Step 3: Cross multiply
    315,597,763.20x = 473,060,721.60 × 121,434,153.60
  4. Step 4: Simplify right side
    315,597,763.20x = 57,445,728,328,901,240
  5. Step 5: Solve for x
    x = 57,445,728,328,901,240/315,597,763.20
  6. Step 6: Final answer
    x = 182,021,975.52

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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.