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Finding the Fourth Proportional to 478,152.08, 659,628.24 and 308,440.88

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Solution

The fourth proportional to 478,152.08, 659,628.24 and 308,440.88 is: 425,505.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,152.08 : 659,628.24 = 308,440.88 : x
  2. Step 2: Convert to fraction form
    478,152.08/659,628.24 = 308,440.88/x
  3. Step 3: Cross multiply
    478,152.08x = 659,628.24 × 308,440.88
  4. Step 4: Simplify right side
    478,152.08x = 203,456,314,818.45
  5. Step 5: Solve for x
    x = 203,456,314,818.45/478,152.08
  6. Step 6: Final answer
    x = 425,505.45

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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.