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Finding the Fourth Proportional to 346,699.30, 520,097.55 and 136,288.30

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Solution

The fourth proportional to 346,699.30, 520,097.55 and 136,288.30 is: 204,451.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,699.30 : 520,097.55 = 136,288.30 : x
  2. Step 2: Convert to fraction form
    346,699.30/520,097.55 = 136,288.30/x
  3. Step 3: Cross multiply
    346,699.30x = 520,097.55 × 136,288.30
  4. Step 4: Simplify right side
    346,699.30x = 70,883,210,923.67
  5. Step 5: Solve for x
    x = 70,883,210,923.67/346,699.30
  6. Step 6: Final answer
    x = 204,451.55

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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.