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Finding the Fourth Proportional to 403,750.60, 606,938.10 and 346,013.80

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Solution

The fourth proportional to 403,750.60, 606,938.10 and 346,013.80 is: 520,145.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,750.60 : 606,938.10 = 346,013.80 : x
  2. Step 2: Convert to fraction form
    403,750.60/606,938.10 = 346,013.80/x
  3. Step 3: Cross multiply
    403,750.60x = 606,938.10 × 346,013.80
  4. Step 4: Simplify right side
    403,750.60x = 210,008,958,345.78
  5. Step 5: Solve for x
    x = 210,008,958,345.78/403,750.60
  6. Step 6: Final answer
    x = 520,145.25

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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.