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Finding the Fourth Proportional to 346,797.97, 478,389.59 and 282,336.55

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Solution

The fourth proportional to 346,797.97, 478,389.59 and 282,336.55 is: 389,468.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,797.97 : 478,389.59 = 282,336.55 : x
  2. Step 2: Convert to fraction form
    346,797.97/478,389.59 = 282,336.55/x
  3. Step 3: Cross multiply
    346,797.97x = 478,389.59 × 282,336.55
  4. Step 4: Simplify right side
    346,797.97x = 135,066,864,984.83
  5. Step 5: Solve for x
    x = 135,066,864,984.83/346,797.97
  6. Step 6: Final answer
    x = 389,468.44

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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.