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Finding the Fourth Proportional to 418,153.70, 577,101.58 and 248,388.50

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Solution

The fourth proportional to 418,153.70, 577,101.58 and 248,388.50 is: 342,805.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,153.70 : 577,101.58 = 248,388.50 : x
  2. Step 2: Convert to fraction form
    418,153.70/577,101.58 = 248,388.50/x
  3. Step 3: Cross multiply
    418,153.70x = 577,101.58 × 248,388.50
  4. Step 4: Simplify right side
    418,153.70x = 143,345,395,803.83
  5. Step 5: Solve for x
    x = 143,345,395,803.83/418,153.70
  6. Step 6: Final answer
    x = 342,805.52

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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.