Home / 393,374,008.02-542,856,935-217,162,245.76

Finding the Fourth Proportional to 393,374,008.02, 542,856,935 and 217,162,245.76

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Solution

The fourth proportional to 393,374,008.02, 542,856,935 and 217,162,245.76 is: 299,684,342.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,374,008.02 : 542,856,935 = 217,162,245.76 : x
  2. Step 2: Convert to fraction form
    393,374,008.02/542,856,935 = 217,162,245.76/x
  3. Step 3: Cross multiply
    393,374,008.02x = 542,856,935 × 217,162,245.76
  4. Step 4: Simplify right side
    393,374,008.02x = 117,888,031,130,990,336
  5. Step 5: Solve for x
    x = 117,888,031,130,990,336/393,374,008.02
  6. Step 6: Final answer
    x = 299,684,342.96

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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.