Home / 279,119,768.72-385,185,298.44-155,357,788.88

Finding the Fourth Proportional to 279,119,768.72, 385,185,298.44 and 155,357,788.88

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Solution

The fourth proportional to 279,119,768.72, 385,185,298.44 and 155,357,788.88 is: 214,393,758.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,119,768.72 : 385,185,298.44 = 155,357,788.88 : x
  2. Step 2: Convert to fraction form
    279,119,768.72/385,185,298.44 = 155,357,788.88/x
  3. Step 3: Cross multiply
    279,119,768.72x = 385,185,298.44 × 155,357,788.88
  4. Step 4: Simplify right side
    279,119,768.72x = 59,841,536,274,721,312
  5. Step 5: Solve for x
    x = 59,841,536,274,721,312/279,119,768.72
  6. Step 6: Final answer
    x = 214,393,758.45

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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.