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Finding the Fourth Proportional to 319,088.70, 478,049.85 and 259,602.30

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Solution

The fourth proportional to 319,088.70, 478,049.85 and 259,602.30 is: 388,928.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,088.70 : 478,049.85 = 259,602.30 : x
  2. Step 2: Convert to fraction form
    319,088.70/478,049.85 = 259,602.30/x
  3. Step 3: Cross multiply
    319,088.70x = 478,049.85 × 259,602.30
  4. Step 4: Simplify right side
    319,088.70x = 124,102,840,574.66
  5. Step 5: Solve for x
    x = 124,102,840,574.66/319,088.70
  6. Step 6: Final answer
    x = 388,928.97

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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.