Home / 438,142,147.20-604,633,965.12-239,900,042.88

Finding the Fourth Proportional to 438,142,147.20, 604,633,965.12 and 239,900,042.88

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Solution

The fourth proportional to 438,142,147.20, 604,633,965.12 and 239,900,042.88 is: 331,060,855.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,142,147.20 : 604,633,965.12 = 239,900,042.88 : x
  2. Step 2: Convert to fraction form
    438,142,147.20/604,633,965.12 = 239,900,042.88/x
  3. Step 3: Cross multiply
    438,142,147.20x = 604,633,965.12 × 239,900,042.88
  4. Step 4: Simplify right side
    438,142,147.20x = 145,051,714,158,992,416
  5. Step 5: Solve for x
    x = 145,051,714,158,992,416/438,142,147.20
  6. Step 6: Final answer
    x = 331,060,855.67

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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.