Home / 256,216,512.72-384,441,881.40-139,456,958.16

Finding the Fourth Proportional to 256,216,512.72, 384,441,881.40 and 139,456,958.16

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Solution

The fourth proportional to 256,216,512.72, 384,441,881.40 and 139,456,958.16 is: 209,249,180.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,216,512.72 : 384,441,881.40 = 139,456,958.16 : x
  2. Step 2: Convert to fraction form
    256,216,512.72/384,441,881.40 = 139,456,958.16/x
  3. Step 3: Cross multiply
    256,216,512.72x = 384,441,881.40 × 139,456,958.16
  4. Step 4: Simplify right side
    256,216,512.72x = 53,613,095,369,351,480
  5. Step 5: Solve for x
    x = 53,613,095,369,351,480/256,216,512.72
  6. Step 6: Final answer
    x = 209,249,180.70

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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.