Home / 256,130,537.28-353,460,066.57-138,655,780.35

Finding the Fourth Proportional to 256,130,537.28, 353,460,066.57 and 138,655,780.35

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Solution

The fourth proportional to 256,130,537.28, 353,460,066.57 and 138,655,780.35 is: 191,344,936.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,130,537.28 : 353,460,066.57 = 138,655,780.35 : x
  2. Step 2: Convert to fraction form
    256,130,537.28/353,460,066.57 = 138,655,780.35/x
  3. Step 3: Cross multiply
    256,130,537.28x = 353,460,066.57 × 138,655,780.35
  4. Step 4: Simplify right side
    256,130,537.28x = 49,009,281,352,826,296
  5. Step 5: Solve for x
    x = 49,009,281,352,826,296/256,130,537.28
  6. Step 6: Final answer
    x = 191,344,936.35

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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.