Home / 398,957,141.40-598,495,548.66-140,126,741.40

Finding the Fourth Proportional to 398,957,141.40, 598,495,548.66 and 140,126,741.40

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Solution

The fourth proportional to 398,957,141.40, 598,495,548.66 and 140,126,741.40 is: 210,211,128.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,957,141.40 : 598,495,548.66 = 140,126,741.40 : x
  2. Step 2: Convert to fraction form
    398,957,141.40/598,495,548.66 = 140,126,741.40/x
  3. Step 3: Cross multiply
    398,957,141.40x = 598,495,548.66 × 140,126,741.40
  4. Step 4: Simplify right side
    398,957,141.40x = 83,865,230,976,130,928
  5. Step 5: Solve for x
    x = 83,865,230,976,130,928/398,957,141.40
  6. Step 6: Final answer
    x = 210,211,128.65

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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.