Home / 407,977.12-611,946.99-141,758.47

Finding the Fourth Proportional to 407,977.12, 611,946.99 and 141,758.47

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Solution

The fourth proportional to 407,977.12, 611,946.99 and 141,758.47 is: 212,631.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,977.12 : 611,946.99 = 141,758.47 : x
  2. Step 2: Convert to fraction form
    407,977.12/611,946.99 = 141,758.47/x
  3. Step 3: Cross multiply
    407,977.12x = 611,946.99 × 141,758.47
  4. Step 4: Simplify right side
    407,977.12x = 86,748,669,023.51
  5. Step 5: Solve for x
    x = 86,748,669,023.51/407,977.12
  6. Step 6: Final answer
    x = 212,631.21

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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.