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Finding the Fourth Proportional to 319,508.79, 479,362.64 and 94,870.40

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Solution

The fourth proportional to 319,508.79, 479,362.64 and 94,870.40 is: 142,335.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,508.79 : 479,362.64 = 94,870.40 : x
  2. Step 2: Convert to fraction form
    319,508.79/479,362.64 = 94,870.40/x
  3. Step 3: Cross multiply
    319,508.79x = 479,362.64 × 94,870.40
  4. Step 4: Simplify right side
    319,508.79x = 45,477,325,401.86
  5. Step 5: Solve for x
    x = 45,477,325,401.86/319,508.79
  6. Step 6: Final answer
    x = 142,335.13

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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.