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Finding the Fourth Proportional to 319,598.48, 478,779.52 and 267,690.86

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Solution

The fourth proportional to 319,598.48, 478,779.52 and 267,690.86 is: 401,018.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,598.48 : 478,779.52 = 267,690.86 : x
  2. Step 2: Convert to fraction form
    319,598.48/478,779.52 = 267,690.86/x
  3. Step 3: Cross multiply
    319,598.48x = 478,779.52 × 267,690.86
  4. Step 4: Simplify right side
    319,598.48x = 128,164,901,459.19
  5. Step 5: Solve for x
    x = 128,164,901,459.19/319,598.48
  6. Step 6: Final answer
    x = 401,018.50

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.