Home / 391,155,340.32-539,798,665.68-214,943,381.28

Finding the Fourth Proportional to 391,155,340.32, 539,798,665.68 and 214,943,381.28

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Solution

The fourth proportional to 391,155,340.32, 539,798,665.68 and 214,943,381.28 is: 296,624,226.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,155,340.32 : 539,798,665.68 = 214,943,381.28 : x
  2. Step 2: Convert to fraction form
    391,155,340.32/539,798,665.68 = 214,943,381.28/x
  3. Step 3: Cross multiply
    391,155,340.32x = 539,798,665.68 × 214,943,381.28
  4. Step 4: Simplify right side
    391,155,340.32x = 116,026,150,411,691,472
  5. Step 5: Solve for x
    x = 116,026,150,411,691,472/391,155,340.32
  6. Step 6: Final answer
    x = 296,624,226.88

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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.