Home / 211,287,124.80-316,930,687.20-138,727,713.60

Finding the Fourth Proportional to 211,287,124.80, 316,930,687.20 and 138,727,713.60

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Solution

The fourth proportional to 211,287,124.80, 316,930,687.20 and 138,727,713.60 is: 208,091,570.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,287,124.80 : 316,930,687.20 = 138,727,713.60 : x
  2. Step 2: Convert to fraction form
    211,287,124.80/316,930,687.20 = 138,727,713.60/x
  3. Step 3: Cross multiply
    211,287,124.80x = 316,930,687.20 × 138,727,713.60
  4. Step 4: Simplify right side
    211,287,124.80x = 43,967,069,604,932,784
  5. Step 5: Solve for x
    x = 43,967,069,604,932,784/211,287,124.80
  6. Step 6: Final answer
    x = 208,091,570.40

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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.