Home / 256,130,538.78-353,460,068.64-138,655,781.86

Finding the Fourth Proportional to 256,130,538.78, 353,460,068.64 and 138,655,781.86

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Solution

The fourth proportional to 256,130,538.78, 353,460,068.64 and 138,655,781.86 is: 191,344,938.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,130,538.78 : 353,460,068.64 = 138,655,781.86 : x
  2. Step 2: Convert to fraction form
    256,130,538.78/353,460,068.64 = 138,655,781.86/x
  3. Step 3: Cross multiply
    256,130,538.78x = 353,460,068.64 × 138,655,781.86
  4. Step 4: Simplify right side
    256,130,538.78x = 49,009,282,173,568,472
  5. Step 5: Solve for x
    x = 49,009,282,173,568,472/256,130,538.78
  6. Step 6: Final answer
    x = 191,344,938.43

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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.