Home / 279,242,073.79-385,381,281.05-208,554,963.31

Finding the Fourth Proportional to 279,242,073.79, 385,381,281.05 and 208,554,963.31

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Solution

The fourth proportional to 279,242,073.79, 385,381,281.05 and 208,554,963.31 is: 287,826,178.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,242,073.79 : 385,381,281.05 = 208,554,963.31 : x
  2. Step 2: Convert to fraction form
    279,242,073.79/385,381,281.05 = 208,554,963.31/x
  3. Step 3: Cross multiply
    279,242,073.79x = 385,381,281.05 × 208,554,963.31
  4. Step 4: Simplify right side
    279,242,073.79x = 80,373,178,929,743,552
  5. Step 5: Solve for x
    x = 80,373,178,929,743,552/279,242,073.79
  6. Step 6: Final answer
    x = 287,826,178.34

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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.