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Finding the Fourth Proportional to 319,643.40, 479,246.40 and 151,244.40

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Solution

The fourth proportional to 319,643.40, 479,246.40 and 151,244.40 is: 226,763.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,643.40 : 479,246.40 = 151,244.40 : x
  2. Step 2: Convert to fraction form
    319,643.40/479,246.40 = 151,244.40/x
  3. Step 3: Cross multiply
    319,643.40x = 479,246.40 × 151,244.40
  4. Step 4: Simplify right side
    319,643.40x = 72,483,334,220.16
  5. Step 5: Solve for x
    x = 72,483,334,220.16/319,643.40
  6. Step 6: Final answer
    x = 226,763.12

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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.