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Finding the Fourth Proportional to 319,509.48, 440,920.62 and 176,275.56

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Solution

The fourth proportional to 319,509.48, 440,920.62 and 176,275.56 is: 243,258.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,509.48 : 440,920.62 = 176,275.56 : x
  2. Step 2: Convert to fraction form
    319,509.48/440,920.62 = 176,275.56/x
  3. Step 3: Cross multiply
    319,509.48x = 440,920.62 × 176,275.56
  4. Step 4: Simplify right side
    319,509.48x = 77,723,529,206.05
  5. Step 5: Solve for x
    x = 77,723,529,206.05/319,509.48
  6. Step 6: Final answer
    x = 243,258.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.