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Finding the Fourth Proportional to 346,543.52, 478,257.84 and 275,509.76

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Solution

The fourth proportional to 346,543.52, 478,257.84 and 275,509.76 is: 380,225.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,543.52 : 478,257.84 = 275,509.76 : x
  2. Step 2: Convert to fraction form
    346,543.52/478,257.84 = 275,509.76/x
  3. Step 3: Cross multiply
    346,543.52x = 478,257.84 × 275,509.76
  4. Step 4: Simplify right side
    346,543.52x = 131,764,702,716.52
  5. Step 5: Solve for x
    x = 131,764,702,716.52/346,543.52
  6. Step 6: Final answer
    x = 380,225.56

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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.