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Finding the Fourth Proportional to 340,435.80, 510,653.70 and 251,862.30

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Solution

The fourth proportional to 340,435.80, 510,653.70 and 251,862.30 is: 377,793.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,435.80 : 510,653.70 = 251,862.30 : x
  2. Step 2: Convert to fraction form
    340,435.80/510,653.70 = 251,862.30/x
  3. Step 3: Cross multiply
    340,435.80x = 510,653.70 × 251,862.30
  4. Step 4: Simplify right side
    340,435.80x = 128,614,415,385.51
  5. Step 5: Solve for x
    x = 128,614,415,385.51/340,435.80
  6. Step 6: Final answer
    x = 377,793.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.