Home / 256,531,870.04-384,930,100.74-120,231,100.76

Finding the Fourth Proportional to 256,531,870.04, 384,930,100.74 and 120,231,100.76

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Solution

The fourth proportional to 256,531,870.04, 384,930,100.74 and 120,231,100.76 is: 180,408,655.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,531,870.04 : 384,930,100.74 = 120,231,100.76 : x
  2. Step 2: Convert to fraction form
    256,531,870.04/384,930,100.74 = 120,231,100.76/x
  3. Step 3: Cross multiply
    256,531,870.04x = 384,930,100.74 × 120,231,100.76
  4. Step 4: Simplify right side
    256,531,870.04x = 46,280,569,727,627,896
  5. Step 5: Solve for x
    x = 46,280,569,727,627,896/256,531,870.04
  6. Step 6: Final answer
    x = 180,408,655.35

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.