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Finding the Fourth Proportional to 455,347.61, 628,380.59 and 251,398.92

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Solution

The fourth proportional to 455,347.61, 628,380.59 and 251,398.92 is: 346,931.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,347.61 : 628,380.59 = 251,398.92 : x
  2. Step 2: Convert to fraction form
    455,347.61/628,380.59 = 251,398.92/x
  3. Step 3: Cross multiply
    455,347.61x = 628,380.59 × 251,398.92
  4. Step 4: Simplify right side
    455,347.61x = 157,974,202,774.40
  5. Step 5: Solve for x
    x = 157,974,202,774.40/455,347.61
  6. Step 6: Final answer
    x = 346,931.00

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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.