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Finding the Fourth Proportional to 343,197.68, 472,633.62 and 308,914.16

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Solution

The fourth proportional to 343,197.68, 472,633.62 and 308,914.16 is: 425,420.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,197.68 : 472,633.62 = 308,914.16 : x
  2. Step 2: Convert to fraction form
    343,197.68/472,633.62 = 308,914.16/x
  3. Step 3: Cross multiply
    343,197.68x = 472,633.62 × 308,914.16
  4. Step 4: Simplify right side
    343,197.68x = 146,003,217,710.06
  5. Step 5: Solve for x
    x = 146,003,217,710.06/343,197.68
  6. Step 6: Final answer
    x = 425,420.18

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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.