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Finding the Fourth Proportional to 340,646.40, 511,029.63 and 140,854.83

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Solution

The fourth proportional to 340,646.40, 511,029.63 and 140,854.83 is: 211,307.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,646.40 : 511,029.63 = 140,854.83 : x
  2. Step 2: Convert to fraction form
    340,646.40/511,029.63 = 140,854.83/x
  3. Step 3: Cross multiply
    340,646.40x = 511,029.63 × 140,854.83
  4. Step 4: Simplify right side
    340,646.40x = 71,980,991,658.61
  5. Step 5: Solve for x
    x = 71,980,991,658.61/340,646.40
  6. Step 6: Final answer
    x = 211,307.07

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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.