Home / 421,539,330.52-581,785,124.61-242,889,003.13

Finding the Fourth Proportional to 421,539,330.52, 581,785,124.61 and 242,889,003.13

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Solution

The fourth proportional to 421,539,330.52, 581,785,124.61 and 242,889,003.13 is: 335,221,884.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,539,330.52 : 581,785,124.61 = 242,889,003.13 : x
  2. Step 2: Convert to fraction form
    421,539,330.52/581,785,124.61 = 242,889,003.13/x
  3. Step 3: Cross multiply
    421,539,330.52x = 581,785,124.61 × 242,889,003.13
  4. Step 4: Simplify right side
    421,539,330.52x = 141,309,208,952,385,728
  5. Step 5: Solve for x
    x = 141,309,208,952,385,728/421,539,330.52
  6. Step 6: Final answer
    x = 335,221,884.94

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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.