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Finding the Fourth Proportional to 343,426.86, 512,613.81 and 319,360.14

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Solution

The fourth proportional to 343,426.86, 512,613.81 and 319,360.14 is: 476,690.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,426.86 : 512,613.81 = 319,360.14 : x
  2. Step 2: Convert to fraction form
    343,426.86/512,613.81 = 319,360.14/x
  3. Step 3: Cross multiply
    343,426.86x = 512,613.81 × 319,360.14
  4. Step 4: Simplify right side
    343,426.86x = 163,708,418,127.53
  5. Step 5: Solve for x
    x = 163,708,418,127.53/343,426.86
  6. Step 6: Final answer
    x = 476,690.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.