Home / 279,581,638.68-385,845,622.20-154,145,323.80

Finding the Fourth Proportional to 279,581,638.68, 385,845,622.20 and 154,145,323.80

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Solution

The fourth proportional to 279,581,638.68, 385,845,622.20 and 154,145,323.80 is: 212,733,206.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,581,638.68 : 385,845,622.20 = 154,145,323.80 : x
  2. Step 2: Convert to fraction form
    279,581,638.68/385,845,622.20 = 154,145,323.80/x
  3. Step 3: Cross multiply
    279,581,638.68x = 385,845,622.20 × 154,145,323.80
  4. Step 4: Simplify right side
    279,581,638.68x = 59,476,298,370,831,472
  5. Step 5: Solve for x
    x = 59,476,298,370,831,472/279,581,638.68
  6. Step 6: Final answer
    x = 212,733,206.13

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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.