Home / 315,021,742.70-472,390,896.45-120,868,630.70

Finding the Fourth Proportional to 315,021,742.70, 472,390,896.45 and 120,868,630.70

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Solution

The fourth proportional to 315,021,742.70, 472,390,896.45 and 120,868,630.70 is: 181,248,571.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,021,742.70 : 472,390,896.45 = 120,868,630.70 : x
  2. Step 2: Convert to fraction form
    315,021,742.70/472,390,896.45 = 120,868,630.70/x
  3. Step 3: Cross multiply
    315,021,742.70x = 472,390,896.45 × 120,868,630.70
  4. Step 4: Simplify right side
    315,021,742.70x = 57,097,240,809,056,992
  5. Step 5: Solve for x
    x = 57,097,240,809,056,992/315,021,742.70
  6. Step 6: Final answer
    x = 181,248,571.35

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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.