Home / 315,552,642.90-473,105,015.55-121,389,033.30

Finding the Fourth Proportional to 315,552,642.90, 473,105,015.55 and 121,389,033.30

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Solution

The fourth proportional to 315,552,642.90, 473,105,015.55 and 121,389,033.30 is: 181,997,399.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,552,642.90 : 473,105,015.55 = 121,389,033.30 : x
  2. Step 2: Convert to fraction form
    315,552,642.90/473,105,015.55 = 121,389,033.30/x
  3. Step 3: Cross multiply
    315,552,642.90x = 473,105,015.55 × 121,389,033.30
  4. Step 4: Simplify right side
    315,552,642.90x = 57,429,760,486,995,968
  5. Step 5: Solve for x
    x = 57,429,760,486,995,968/315,552,642.90
  6. Step 6: Final answer
    x = 181,997,399.73

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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.