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Finding the Fourth Proportional to 517,249.90, 713,665.38 and 302,442.76

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Solution

The fourth proportional to 517,249.90, 713,665.38 and 302,442.76 is: 417,289.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    517,249.90 : 713,665.38 = 302,442.76 : x
  2. Step 2: Convert to fraction form
    517,249.90/713,665.38 = 302,442.76/x
  3. Step 3: Cross multiply
    517,249.90x = 713,665.38 × 302,442.76
  4. Step 4: Simplify right side
    517,249.90x = 215,842,927,243.65
  5. Step 5: Solve for x
    x = 215,842,927,243.65/517,249.90
  6. Step 6: Final answer
    x = 417,289.45

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1.5x scale

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.