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Finding the Fourth Proportional to 319,713.60, 479,570.40 and 109,358.40

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Solution

The fourth proportional to 319,713.60, 479,570.40 and 109,358.40 is: 164,037.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,713.60 : 479,570.40 = 109,358.40 : x
  2. Step 2: Convert to fraction form
    319,713.60/479,570.40 = 109,358.40/x
  3. Step 3: Cross multiply
    319,713.60x = 479,570.40 × 109,358.40
  4. Step 4: Simplify right side
    319,713.60x = 52,445,051,631.36
  5. Step 5: Solve for x
    x = 52,445,051,631.36/319,713.60
  6. Step 6: Final answer
    x = 164,037.60

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1.5x scale

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.