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Finding the Fourth Proportional to 478,360.53, 660,768.50 and 357,291.86

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Solution

The fourth proportional to 478,360.53, 660,768.50 and 357,291.86 is: 493,534.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,360.53 : 660,768.50 = 357,291.86 : x
  2. Step 2: Convert to fraction form
    478,360.53/660,768.50 = 357,291.86/x
  3. Step 3: Cross multiply
    478,360.53x = 660,768.50 × 357,291.86
  4. Step 4: Simplify right side
    478,360.53x = 236,087,203,983.80
  5. Step 5: Solve for x
    x = 236,087,203,983.80/478,360.53
  6. Step 6: Final answer
    x = 493,534.04

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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.