Home / 393,328,904.45-542,793,996.65-217,117,014.35

Finding the Fourth Proportional to 393,328,904.45, 542,793,996.65 and 217,117,014.35

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Solution

The fourth proportional to 393,328,904.45, 542,793,996.65 and 217,117,014.35 is: 299,621,539.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,328,904.45 : 542,793,996.65 = 217,117,014.35 : x
  2. Step 2: Convert to fraction form
    393,328,904.45/542,793,996.65 = 217,117,014.35/x
  3. Step 3: Cross multiply
    393,328,904.45x = 542,793,996.65 × 217,117,014.35
  4. Step 4: Simplify right side
    393,328,904.45x = 117,849,811,957,580,736
  5. Step 5: Solve for x
    x = 117,849,811,957,580,736/393,328,904.45
  6. Step 6: Final answer
    x = 299,621,539.70

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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.