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Finding the Fourth Proportional to 342,946.68, 473,390.64 and 279,173.76

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Solution

The fourth proportional to 342,946.68, 473,390.64 and 279,173.76 is: 385,360.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,946.68 : 473,390.64 = 279,173.76 : x
  2. Step 2: Convert to fraction form
    342,946.68/473,390.64 = 279,173.76/x
  3. Step 3: Cross multiply
    342,946.68x = 473,390.64 × 279,173.76
  4. Step 4: Simplify right side
    342,946.68x = 132,158,244,917.61
  5. Step 5: Solve for x
    x = 132,158,244,917.61/342,946.68
  6. Step 6: Final answer
    x = 385,360.91

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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.