Home / 390,320.44-538,345.02-335,965.12

Finding the Fourth Proportional to 390,320.44, 538,345.02 and 335,965.12

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Solution

The fourth proportional to 390,320.44, 538,345.02 and 335,965.12 is: 463,376.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,320.44 : 538,345.02 = 335,965.12 : x
  2. Step 2: Convert to fraction form
    390,320.44/538,345.02 = 335,965.12/x
  3. Step 3: Cross multiply
    390,320.44x = 538,345.02 × 335,965.12
  4. Step 4: Simplify right side
    390,320.44x = 180,865,149,245.70
  5. Step 5: Solve for x
    x = 180,865,149,245.70/390,320.44
  6. Step 6: Final answer
    x = 463,376.06

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.