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Finding the Fourth Proportional to 478,302.89, 660,087.93 and 263,442.86

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Solution

The fourth proportional to 478,302.89, 660,087.93 and 263,442.86 is: 363,567.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,302.89 : 660,087.93 = 263,442.86 : x
  2. Step 2: Convert to fraction form
    478,302.89/660,087.93 = 263,442.86/x
  3. Step 3: Cross multiply
    478,302.89x = 660,087.93 × 263,442.86
  4. Step 4: Simplify right side
    478,302.89x = 173,895,452,130.68
  5. Step 5: Solve for x
    x = 173,895,452,130.68/478,302.89
  6. Step 6: Final answer
    x = 363,567.64

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1.5x scale

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.