Home / 390,349.05-585,523.77-109,866.30

Finding the Fourth Proportional to 390,349.05, 585,523.77 and 109,866.30

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Solution

The fourth proportional to 390,349.05, 585,523.77 and 109,866.30 is: 164,799.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,349.05 : 585,523.77 = 109,866.30 : x
  2. Step 2: Convert to fraction form
    390,349.05/585,523.77 = 109,866.30/x
  3. Step 3: Cross multiply
    390,349.05x = 585,523.77 × 109,866.30
  4. Step 4: Simplify right side
    390,349.05x = 64,329,330,171.95
  5. Step 5: Solve for x
    x = 64,329,330,171.95/390,349.05
  6. Step 6: Final answer
    x = 164,799.50

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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.