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Finding the Fourth Proportional to 507,703.63, 761,306.64 and 208,102.72

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Solution

The fourth proportional to 507,703.63, 761,306.64 and 208,102.72 is: 312,052.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    507,703.63 : 761,306.64 = 208,102.72 : x
  2. Step 2: Convert to fraction form
    507,703.63/761,306.64 = 208,102.72/x
  3. Step 3: Cross multiply
    507,703.63x = 761,306.64 × 208,102.72
  4. Step 4: Simplify right side
    507,703.63x = 158,429,982,538.06
  5. Step 5: Solve for x
    x = 158,429,982,538.06/507,703.63
  6. Step 6: Final answer
    x = 312,052.10

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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.