Home / 421,539,331.02-581,785,125.30-242,889,003.62

Finding the Fourth Proportional to 421,539,331.02, 581,785,125.30 and 242,889,003.62

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Solution

The fourth proportional to 421,539,331.02, 581,785,125.30 and 242,889,003.62 is: 335,221,885.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,539,331.02 : 581,785,125.30 = 242,889,003.62 : x
  2. Step 2: Convert to fraction form
    421,539,331.02/581,785,125.30 = 242,889,003.62/x
  3. Step 3: Cross multiply
    421,539,331.02x = 581,785,125.30 × 242,889,003.62
  4. Step 4: Simplify right side
    421,539,331.02x = 141,309,209,405,053,840
  5. Step 5: Solve for x
    x = 141,309,209,405,053,840/421,539,331.02
  6. Step 6: Final answer
    x = 335,221,885.61

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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.