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Finding the Fourth Proportional to 342,928.68, 473,365.80 and 279,155.76

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Solution

The fourth proportional to 342,928.68, 473,365.80 and 279,155.76 is: 385,336.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,928.68 : 473,365.80 = 279,155.76 : x
  2. Step 2: Convert to fraction form
    342,928.68/473,365.80 = 279,155.76/x
  3. Step 3: Cross multiply
    342,928.68x = 473,365.80 × 279,155.76
  4. Step 4: Simplify right side
    342,928.68x = 132,142,789,657.01
  5. Step 5: Solve for x
    x = 132,142,789,657.01/342,928.68
  6. Step 6: Final answer
    x = 385,336.07

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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.