Home / 421,539,331.52-581,785,126-242,889,004.12

Finding the Fourth Proportional to 421,539,331.52, 581,785,126 and 242,889,004.12

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Solution

The fourth proportional to 421,539,331.52, 581,785,126 and 242,889,004.12 is: 335,221,886.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,539,331.52 : 581,785,126 = 242,889,004.12 : x
  2. Step 2: Convert to fraction form
    421,539,331.52/581,785,126 = 242,889,004.12/x
  3. Step 3: Cross multiply
    421,539,331.52x = 581,785,126 × 242,889,004.12
  4. Step 4: Simplify right side
    421,539,331.52x = 141,309,209,865,968,720
  5. Step 5: Solve for x
    x = 141,309,209,865,968,720/421,539,331.52
  6. Step 6: Final answer
    x = 335,221,886.31

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.