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Finding the Fourth Proportional to 319,798.72, 479,596.02 and 130,258.72

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Solution

The fourth proportional to 319,798.72, 479,596.02 and 130,258.72 is: 195,346.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,798.72 : 479,596.02 = 130,258.72 : x
  2. Step 2: Convert to fraction form
    319,798.72/479,596.02 = 130,258.72/x
  3. Step 3: Cross multiply
    319,798.72x = 479,596.02 × 130,258.72
  4. Step 4: Simplify right side
    319,798.72x = 62,471,563,682.29
  5. Step 5: Solve for x
    x = 62,471,563,682.29/319,798.72
  6. Step 6: Final answer
    x = 195,346.51

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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.