Home / 315,439,756.40-472,805,740.20-133,655,999.60

Finding the Fourth Proportional to 315,439,756.40, 472,805,740.20 and 133,655,999.60

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Solution

The fourth proportional to 315,439,756.40, 472,805,740.20 and 133,655,999.60 is: 200,334,049.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,439,756.40 : 472,805,740.20 = 133,655,999.60 : x
  2. Step 2: Convert to fraction form
    315,439,756.40/472,805,740.20 = 133,655,999.60/x
  3. Step 3: Cross multiply
    315,439,756.40x = 472,805,740.20 × 133,655,999.60
  4. Step 4: Simplify right side
    315,439,756.40x = 63,193,323,823,048,896
  5. Step 5: Solve for x
    x = 63,193,323,823,048,896/315,439,756.40
  6. Step 6: Final answer
    x = 200,334,049.66

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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.