Home / 354,336,891.40-531,505,337.10-138,926,139.40

Finding the Fourth Proportional to 354,336,891.40, 531,505,337.10 and 138,926,139.40

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Solution

The fourth proportional to 354,336,891.40, 531,505,337.10 and 138,926,139.40 is: 208,389,209.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,336,891.40 : 531,505,337.10 = 138,926,139.40 : x
  2. Step 2: Convert to fraction form
    354,336,891.40/531,505,337.10 = 138,926,139.40/x
  3. Step 3: Cross multiply
    354,336,891.40x = 531,505,337.10 × 138,926,139.40
  4. Step 4: Simplify right side
    354,336,891.40x = 73,839,984,553,798,592
  5. Step 5: Solve for x
    x = 73,839,984,553,798,592/354,336,891.40
  6. Step 6: Final answer
    x = 208,389,209.10

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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.