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Finding the Fourth Proportional to 346,779.70, 520,039.95 and 136,374.10

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Solution

The fourth proportional to 346,779.70, 520,039.95 and 136,374.10 is: 204,510.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,779.70 : 520,039.95 = 136,374.10 : x
  2. Step 2: Convert to fraction form
    346,779.70/520,039.95 = 136,374.10/x
  3. Step 3: Cross multiply
    346,779.70x = 520,039.95 × 136,374.10
  4. Step 4: Simplify right side
    346,779.70x = 70,919,980,145.30
  5. Step 5: Solve for x
    x = 70,919,980,145.30/346,779.70
  6. Step 6: Final answer
    x = 204,510.18

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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.