Home / 393,328,765.56-542,793,805.10-217,116,875.72

Finding the Fourth Proportional to 393,328,765.56, 542,793,805.10 and 217,116,875.72

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Solution

The fourth proportional to 393,328,765.56, 542,793,805.10 and 217,116,875.72 is: 299,621,348.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,328,765.56 : 542,793,805.10 = 217,116,875.72 : x
  2. Step 2: Convert to fraction form
    393,328,765.56/542,793,805.10 = 217,116,875.72/x
  3. Step 3: Cross multiply
    393,328,765.56x = 542,793,805.10 × 217,116,875.72
  4. Step 4: Simplify right side
    393,328,765.56x = 117,849,695,123,482,608
  5. Step 5: Solve for x
    x = 117,849,695,123,482,608/393,328,765.56
  6. Step 6: Final answer
    x = 299,621,348.46

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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.