Home / 385,155,839.43-531,470,217.95-215,619,360.74

Finding the Fourth Proportional to 385,155,839.43, 531,470,217.95 and 215,619,360.74

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Solution

The fourth proportional to 385,155,839.43, 531,470,217.95 and 215,619,360.74 is: 297,529,615.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,155,839.43 : 531,470,217.95 = 215,619,360.74 : x
  2. Step 2: Convert to fraction form
    385,155,839.43/531,470,217.95 = 215,619,360.74/x
  3. Step 3: Cross multiply
    385,155,839.43x = 531,470,217.95 × 215,619,360.74
  4. Step 4: Simplify right side
    385,155,839.43x = 114,595,268,646,602,192
  5. Step 5: Solve for x
    x = 114,595,268,646,602,192/385,155,839.43
  6. Step 6: Final answer
    x = 297,529,615.06

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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.