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Finding the Fourth Proportional to 511,902.89, 767,526.28 and 212,590.07

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Solution

The fourth proportional to 511,902.89, 767,526.28 and 212,590.07 is: 318,748.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    511,902.89 : 767,526.28 = 212,590.07 : x
  2. Step 2: Convert to fraction form
    511,902.89/767,526.28 = 212,590.07/x
  3. Step 3: Cross multiply
    511,902.89x = 767,526.28 × 212,590.07
  4. Step 4: Simplify right side
    511,902.89x = 163,168,465,296.98
  5. Step 5: Solve for x
    x = 163,168,465,296.98/511,902.89
  6. Step 6: Final answer
    x = 318,748.87

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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.