Home / 393,328,754.55-542,793,789.90-217,116,864.72

Finding the Fourth Proportional to 393,328,754.55, 542,793,789.90 and 217,116,864.72

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Solution

The fourth proportional to 393,328,754.55, 542,793,789.90 and 217,116,864.72 is: 299,621,333.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,328,754.55 : 542,793,789.90 = 217,116,864.72 : x
  2. Step 2: Convert to fraction form
    393,328,754.55/542,793,789.90 = 217,116,864.72/x
  3. Step 3: Cross multiply
    393,328,754.55x = 542,793,789.90 × 217,116,864.72
  4. Step 4: Simplify right side
    393,328,754.55x = 117,849,685,852,574,400
  5. Step 5: Solve for x
    x = 117,849,685,852,574,400/393,328,754.55
  6. Step 6: Final answer
    x = 299,621,333.27

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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.